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Finding the Fourth Proportional to 58,592.71, 87,871.11 and 21,148.21

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Solution

The fourth proportional to 58,592.71, 87,871.11 and 21,148.21 is: 31,715.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,592.71 : 87,871.11 = 21,148.21 : x
  2. Step 2: Convert to fraction form
    58,592.71/87,871.11 = 21,148.21/x
  3. Step 3: Cross multiply
    58,592.71x = 87,871.11 × 21,148.21
  4. Step 4: Simplify right side
    58,592.71x = 1,858,316,687.21
  5. Step 5: Solve for x
    x = 1,858,316,687.21/58,592.71
  6. Step 6: Final answer
    x = 31,715.83

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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.