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Finding the Fourth Proportional to 63,745,921.80, 95,618,882.70 and 20,646,056.70

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Solution

The fourth proportional to 63,745,921.80, 95,618,882.70 and 20,646,056.70 is: 30,969,085.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,745,921.80 : 95,618,882.70 = 20,646,056.70 : x
  2. Step 2: Convert to fraction form
    63,745,921.80/95,618,882.70 = 20,646,056.70/x
  3. Step 3: Cross multiply
    63,745,921.80x = 95,618,882.70 × 20,646,056.70
  4. Step 4: Simplify right side
    63,745,921.80x = 1,974,152,873,814,849
  5. Step 5: Solve for x
    x = 1,974,152,873,814,849/63,745,921.80
  6. Step 6: Final answer
    x = 30,969,085.05

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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.