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Finding the Fourth Proportional to 64,436.76, 88,720.65 and 58,531.86

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Solution

The fourth proportional to 64,436.76, 88,720.65 and 58,531.86 is: 80,590.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,436.76 : 88,720.65 = 58,531.86 : x
  2. Step 2: Convert to fraction form
    64,436.76/88,720.65 = 58,531.86/x
  3. Step 3: Cross multiply
    64,436.76x = 88,720.65 × 58,531.86
  4. Step 4: Simplify right side
    64,436.76x = 5,192,984,664.91
  5. Step 5: Solve for x
    x = 5,192,984,664.91/64,436.76
  6. Step 6: Final answer
    x = 80,590.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.