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Finding the Fourth Proportional to 66,766,856.70, 100,150,285.05 and 60,708,429.30

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Solution

The fourth proportional to 66,766,856.70, 100,150,285.05 and 60,708,429.30 is: 91,062,643.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,766,856.70 : 100,150,285.05 = 60,708,429.30 : x
  2. Step 2: Convert to fraction form
    66,766,856.70/100,150,285.05 = 60,708,429.30/x
  3. Step 3: Cross multiply
    66,766,856.70x = 100,150,285.05 × 60,708,429.30
  4. Step 4: Simplify right side
    66,766,856.70x = 6,079,966,499,332,771
  5. Step 5: Solve for x
    x = 6,079,966,499,332,771/66,766,856.70
  6. Step 6: Final answer
    x = 91,062,643.95

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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.