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Finding the Fourth Proportional to 143,842.70, 198,587.97 and 127,882.98

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Solution

The fourth proportional to 143,842.70, 198,587.97 and 127,882.98 is: 176,554.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,842.70 : 198,587.97 = 127,882.98 : x
  2. Step 2: Convert to fraction form
    143,842.70/198,587.97 = 127,882.98/x
  3. Step 3: Cross multiply
    143,842.70x = 198,587.97 × 127,882.98
  4. Step 4: Simplify right side
    143,842.70x = 25,396,021,395.75
  5. Step 5: Solve for x
    x = 25,396,021,395.75/143,842.70
  6. Step 6: Final answer
    x = 176,554.13

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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.