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Finding the Fourth Proportional to 279,167.10, 418,581.72 and 125,264.88

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Solution

The fourth proportional to 279,167.10, 418,581.72 and 125,264.88 is: 187,821.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,167.10 : 418,581.72 = 125,264.88 : x
  2. Step 2: Convert to fraction form
    279,167.10/418,581.72 = 125,264.88/x
  3. Step 3: Cross multiply
    279,167.10x = 418,581.72 × 125,264.88
  4. Step 4: Simplify right side
    279,167.10x = 52,433,588,925.99
  5. Step 5: Solve for x
    x = 52,433,588,925.99/279,167.10
  6. Step 6: Final answer
    x = 187,821.52

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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.