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Finding the Fourth Proportional to 57,203,760.60, 85,805,640.90 and 18,863,244.90

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Solution

The fourth proportional to 57,203,760.60, 85,805,640.90 and 18,863,244.90 is: 28,294,867.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,203,760.60 : 85,805,640.90 = 18,863,244.90 : x
  2. Step 2: Convert to fraction form
    57,203,760.60/85,805,640.90 = 18,863,244.90/x
  3. Step 3: Cross multiply
    57,203,760.60x = 85,805,640.90 × 18,863,244.90
  4. Step 4: Simplify right side
    57,203,760.60x = 1,618,572,818,098,156.50
  5. Step 5: Solve for x
    x = 1,618,572,818,098,156.50/57,203,760.60
  6. Step 6: Final answer
    x = 28,294,867.35

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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.