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Finding the Fourth Proportional to 167,402.43, 251,039.39 and 71,278.74

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Solution

The fourth proportional to 167,402.43, 251,039.39 and 71,278.74 is: 106,890.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,402.43 : 251,039.39 = 71,278.74 : x
  2. Step 2: Convert to fraction form
    167,402.43/251,039.39 = 71,278.74/x
  3. Step 3: Cross multiply
    167,402.43x = 251,039.39 × 71,278.74
  4. Step 4: Simplify right side
    167,402.43x = 17,893,771,053.17
  5. Step 5: Solve for x
    x = 17,893,771,053.17/167,402.43
  6. Step 6: Final answer
    x = 106,890.75

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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.