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Finding the Fourth Proportional to 74,685.72, 103,044.24 and 44,455.80

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Solution

The fourth proportional to 74,685.72, 103,044.24 and 44,455.80 is: 61,335.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,685.72 : 103,044.24 = 44,455.80 : x
  2. Step 2: Convert to fraction form
    74,685.72/103,044.24 = 44,455.80/x
  3. Step 3: Cross multiply
    74,685.72x = 103,044.24 × 44,455.80
  4. Step 4: Simplify right side
    74,685.72x = 4,580,914,124.59
  5. Step 5: Solve for x
    x = 4,580,914,124.59/74,685.72
  6. Step 6: Final answer
    x = 61,335.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.