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Finding the Fourth Proportional to 169,740.72, 234,253.62 and 98,138.88

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Solution

The fourth proportional to 169,740.72, 234,253.62 and 98,138.88 is: 135,438.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,740.72 : 234,253.62 = 98,138.88 : x
  2. Step 2: Convert to fraction form
    169,740.72/234,253.62 = 98,138.88/x
  3. Step 3: Cross multiply
    169,740.72x = 234,253.62 × 98,138.88
  4. Step 4: Simplify right side
    169,740.72x = 22,989,387,902.75
  5. Step 5: Solve for x
    x = 22,989,387,902.75/169,740.72
  6. Step 6: Final answer
    x = 135,438.26

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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.