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Finding the Fourth Proportional to 167,371.40, 251,057.10 and 42,712.40

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Solution

The fourth proportional to 167,371.40, 251,057.10 and 42,712.40 is: 64,068.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,371.40 : 251,057.10 = 42,712.40 : x
  2. Step 2: Convert to fraction form
    167,371.40/251,057.10 = 42,712.40/x
  3. Step 3: Cross multiply
    167,371.40x = 251,057.10 × 42,712.40
  4. Step 4: Simplify right side
    167,371.40x = 10,723,251,278.04
  5. Step 5: Solve for x
    x = 10,723,251,278.04/167,371.40
  6. Step 6: Final answer
    x = 64,068.60

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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.