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Finding the Fourth Proportional to 115,607.20, 173,119.20 and 92,279.20

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Solution

The fourth proportional to 115,607.20, 173,119.20 and 92,279.20 is: 138,186.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,607.20 : 173,119.20 = 92,279.20 : x
  2. Step 2: Convert to fraction form
    115,607.20/173,119.20 = 92,279.20/x
  3. Step 3: Cross multiply
    115,607.20x = 173,119.20 × 92,279.20
  4. Step 4: Simplify right side
    115,607.20x = 15,975,301,280.64
  5. Step 5: Solve for x
    x = 15,975,301,280.64/115,607.20
  6. Step 6: Final answer
    x = 138,186.04

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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.