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Finding the Fourth Proportional to 74,781,807.60, 112,172,711.40 and 49,251,644.40

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Solution

The fourth proportional to 74,781,807.60, 112,172,711.40 and 49,251,644.40 is: 73,877,466.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,781,807.60 : 112,172,711.40 = 49,251,644.40 : x
  2. Step 2: Convert to fraction form
    74,781,807.60/112,172,711.40 = 49,251,644.40/x
  3. Step 3: Cross multiply
    74,781,807.60x = 112,172,711.40 × 49,251,644.40
  4. Step 4: Simplify right side
    74,781,807.60x = 5,524,690,493,256,626
  5. Step 5: Solve for x
    x = 5,524,690,493,256,626/74,781,807.60
  6. Step 6: Final answer
    x = 73,877,466.60

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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.