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Finding the Fourth Proportional to 646,782.30, 970,173.45 and 636,284.70

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Solution

The fourth proportional to 646,782.30, 970,173.45 and 636,284.70 is: 954,427.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,782.30 : 970,173.45 = 636,284.70 : x
  2. Step 2: Convert to fraction form
    646,782.30/970,173.45 = 636,284.70/x
  3. Step 3: Cross multiply
    646,782.30x = 970,173.45 × 636,284.70
  4. Step 4: Simplify right side
    646,782.30x = 617,306,522,581.22
  5. Step 5: Solve for x
    x = 617,306,522,581.22/646,782.30
  6. Step 6: Final answer
    x = 954,427.05

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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.