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Finding the Fourth Proportional to 646,886.70, 970,330.05 and 617,856.30

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Solution

The fourth proportional to 646,886.70, 970,330.05 and 617,856.30 is: 926,784.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,886.70 : 970,330.05 = 617,856.30 : x
  2. Step 2: Convert to fraction form
    646,886.70/970,330.05 = 617,856.30/x
  3. Step 3: Cross multiply
    646,886.70x = 970,330.05 × 617,856.30
  4. Step 4: Simplify right side
    646,886.70x = 599,524,534,471.82
  5. Step 5: Solve for x
    x = 599,524,534,471.82/646,886.70
  6. Step 6: Final answer
    x = 926,784.45

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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.