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Finding the Fourth Proportional to 74,702.92, 112,124.70 and 49,760.56

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Solution

The fourth proportional to 74,702.92, 112,124.70 and 49,760.56 is: 74,687.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,702.92 : 112,124.70 = 49,760.56 : x
  2. Step 2: Convert to fraction form
    74,702.92/112,124.70 = 49,760.56/x
  3. Step 3: Cross multiply
    74,702.92x = 112,124.70 × 49,760.56
  4. Step 4: Simplify right side
    74,702.92x = 5,579,387,861.83
  5. Step 5: Solve for x
    x = 5,579,387,861.83/74,702.92
  6. Step 6: Final answer
    x = 74,687.68

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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.