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Finding the Fourth Proportional to 359,172.25, 538,761.08 and 159,438.94

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Solution

The fourth proportional to 359,172.25, 538,761.08 and 159,438.94 is: 239,159.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,172.25 : 538,761.08 = 159,438.94 : x
  2. Step 2: Convert to fraction form
    359,172.25/538,761.08 = 159,438.94/x
  3. Step 3: Cross multiply
    359,172.25x = 538,761.08 × 159,438.94
  4. Step 4: Simplify right side
    359,172.25x = 85,899,495,508.46
  5. Step 5: Solve for x
    x = 85,899,495,508.46/359,172.25
  6. Step 6: Final answer
    x = 239,159.61

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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.