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Finding the Fourth Proportional to 57,374.59, 86,061.95 and 17,931.91

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Solution

The fourth proportional to 57,374.59, 86,061.95 and 17,931.91 is: 26,897.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,374.59 : 86,061.95 = 17,931.91 : x
  2. Step 2: Convert to fraction form
    57,374.59/86,061.95 = 17,931.91/x
  3. Step 3: Cross multiply
    57,374.59x = 86,061.95 × 17,931.91
  4. Step 4: Simplify right side
    57,374.59x = 1,543,254,904.25
  5. Step 5: Solve for x
    x = 1,543,254,904.25/57,374.59
  6. Step 6: Final answer
    x = 26,897.88

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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.