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Finding the Fourth Proportional to 266,031.30, 399,306.15 and 133,061.70

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Solution

The fourth proportional to 266,031.30, 399,306.15 and 133,061.70 is: 199,722.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,031.30 : 399,306.15 = 133,061.70 : x
  2. Step 2: Convert to fraction form
    266,031.30/399,306.15 = 133,061.70/x
  3. Step 3: Cross multiply
    266,031.30x = 399,306.15 × 133,061.70
  4. Step 4: Simplify right side
    266,031.30x = 53,132,355,139.46
  5. Step 5: Solve for x
    x = 53,132,355,139.46/266,031.30
  6. Step 6: Final answer
    x = 199,722.19

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