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Finding the Fourth Proportional to 646,988,579.55, 970,482,869.33 and 646,988,579.55

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Solution

The fourth proportional to 646,988,579.55, 970,482,869.33 and 646,988,579.55 is: 970,482,869.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,988,579.55 : 970,482,869.33 = 646,988,579.55 : x
  2. Step 2: Convert to fraction form
    646,988,579.55/970,482,869.33 = 646,988,579.55/x
  3. Step 3: Cross multiply
    646,988,579.55x = 970,482,869.33 × 646,988,579.55
  4. Step 4: Simplify right side
    646,988,579.55x = 627,891,333,102,189,952
  5. Step 5: Solve for x
    x = 627,891,333,102,189,952/646,988,579.55
  6. Step 6: Final answer
    x = 970,482,869.33

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.