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Finding the Fourth Proportional to 188,959.43, 260,754.17 and 117,337.91

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Solution

The fourth proportional to 188,959.43, 260,754.17 and 117,337.91 is: 161,920.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,959.43 : 260,754.17 = 117,337.91 : x
  2. Step 2: Convert to fraction form
    188,959.43/260,754.17 = 117,337.91/x
  3. Step 3: Cross multiply
    188,959.43x = 260,754.17 × 117,337.91
  4. Step 4: Simplify right side
    188,959.43x = 30,596,349,396.78
  5. Step 5: Solve for x
    x = 30,596,349,396.78/188,959.43
  6. Step 6: Final answer
    x = 161,920.21

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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.