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Finding the Fourth Proportional to 143,954.70, 215,355.33 and 124,443.42

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Solution

The fourth proportional to 143,954.70, 215,355.33 and 124,443.42 is: 186,166.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,954.70 : 215,355.33 = 124,443.42 : x
  2. Step 2: Convert to fraction form
    143,954.70/215,355.33 = 124,443.42/x
  3. Step 3: Cross multiply
    143,954.70x = 215,355.33 × 124,443.42
  4. Step 4: Simplify right side
    143,954.70x = 26,799,553,780.43
  5. Step 5: Solve for x
    x = 26,799,553,780.43/143,954.70
  6. Step 6: Final answer
    x = 186,166.58

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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.