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Finding the Fourth Proportional to 57,209,011.20, 85,813,516.80 and 57,209,011.20

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Solution

The fourth proportional to 57,209,011.20, 85,813,516.80 and 57,209,011.20 is: 85,813,516.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,209,011.20 : 85,813,516.80 = 57,209,011.20 : x
  2. Step 2: Convert to fraction form
    57,209,011.20/85,813,516.80 = 57,209,011.20/x
  3. Step 3: Cross multiply
    57,209,011.20x = 85,813,516.80 × 57,209,011.20
  4. Step 4: Simplify right side
    57,209,011.20x = 4,909,306,443,722,588
  5. Step 5: Solve for x
    x = 4,909,306,443,722,588/57,209,011.20
  6. Step 6: Final answer
    x = 85,813,516.80

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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.