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Finding the Fourth Proportional to 220,489.59, 304,317.89 and 124,996.66

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Solution

The fourth proportional to 220,489.59, 304,317.89 and 124,996.66 is: 172,519.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,489.59 : 304,317.89 = 124,996.66 : x
  2. Step 2: Convert to fraction form
    220,489.59/304,317.89 = 124,996.66/x
  3. Step 3: Cross multiply
    220,489.59x = 304,317.89 × 124,996.66
  4. Step 4: Simplify right side
    220,489.59x = 38,038,719,828.25
  5. Step 5: Solve for x
    x = 38,038,719,828.25/220,489.59
  6. Step 6: Final answer
    x = 172,519.35

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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.