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Finding the Fourth Proportional to 137,613.66, 189,960.87 and 92,275.08

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Solution

The fourth proportional to 137,613.66, 189,960.87 and 92,275.08 is: 127,375.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,613.66 : 189,960.87 = 92,275.08 : x
  2. Step 2: Convert to fraction form
    137,613.66/189,960.87 = 92,275.08/x
  3. Step 3: Cross multiply
    137,613.66x = 189,960.87 × 92,275.08
  4. Step 4: Simplify right side
    137,613.66x = 17,528,654,476.12
  5. Step 5: Solve for x
    x = 17,528,654,476.12/137,613.66
  6. Step 6: Final answer
    x = 127,375.83

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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.