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Finding the Fourth Proportional to 72,531.94, 108,732.30 and 25,773.88

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Solution

The fourth proportional to 72,531.94, 108,732.30 and 25,773.88 is: 38,637.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,531.94 : 108,732.30 = 25,773.88 : x
  2. Step 2: Convert to fraction form
    72,531.94/108,732.30 = 25,773.88/x
  3. Step 3: Cross multiply
    72,531.94x = 108,732.30 × 25,773.88
  4. Step 4: Simplify right side
    72,531.94x = 2,802,453,252.32
  5. Step 5: Solve for x
    x = 2,802,453,252.32/72,531.94
  6. Step 6: Final answer
    x = 38,637.51

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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.