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Finding the Fourth Proportional to 86,495.13, 129,748.16 and 36,565.92

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Solution

The fourth proportional to 86,495.13, 129,748.16 and 36,565.92 is: 54,851.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,495.13 : 129,748.16 = 36,565.92 : x
  2. Step 2: Convert to fraction form
    86,495.13/129,748.16 = 36,565.92/x
  3. Step 3: Cross multiply
    86,495.13x = 129,748.16 × 36,565.92
  4. Step 4: Simplify right side
    86,495.13x = 4,744,360,655.88
  5. Step 5: Solve for x
    x = 4,744,360,655.88/86,495.13
  6. Step 6: Final answer
    x = 54,851.19

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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.