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Finding the Fourth Proportional to 158,001.85, 218,042.54 and 86,381.85

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Solution

The fourth proportional to 158,001.85, 218,042.54 and 86,381.85 is: 119,206.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,001.85 : 218,042.54 = 86,381.85 : x
  2. Step 2: Convert to fraction form
    158,001.85/218,042.54 = 86,381.85/x
  3. Step 3: Cross multiply
    158,001.85x = 218,042.54 × 86,381.85
  4. Step 4: Simplify right side
    158,001.85x = 18,834,917,551.99
  5. Step 5: Solve for x
    x = 18,834,917,551.99/158,001.85
  6. Step 6: Final answer
    x = 119,206.95

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1.5x scale

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.