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Finding the Fourth Proportional to 25,124.61, 37,687.71 and 12,637.82

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Solution

The fourth proportional to 25,124.61, 37,687.71 and 12,637.82 is: 18,957.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,124.61 : 37,687.71 = 12,637.82 : x
  2. Step 2: Convert to fraction form
    25,124.61/37,687.71 = 12,637.82/x
  3. Step 3: Cross multiply
    25,124.61x = 37,687.71 × 12,637.82
  4. Step 4: Simplify right side
    25,124.61x = 476,290,306.75
  5. Step 5: Solve for x
    x = 476,290,306.75/25,124.61
  6. Step 6: Final answer
    x = 18,957.12

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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.