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Finding the Fourth Proportional to 58,294.62, 87,432.65 and 20,847.71

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Solution

The fourth proportional to 58,294.62, 87,432.65 and 20,847.71 is: 31,268.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,294.62 : 87,432.65 = 20,847.71 : x
  2. Step 2: Convert to fraction form
    58,294.62/87,432.65 = 20,847.71/x
  3. Step 3: Cross multiply
    58,294.62x = 87,432.65 × 20,847.71
  4. Step 4: Simplify right side
    58,294.62x = 1,822,770,724.25
  5. Step 5: Solve for x
    x = 1,822,770,724.25/58,294.62
  6. Step 6: Final answer
    x = 31,268.25

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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.