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Finding the Fourth Proportional to 159,594.44, 220,237.61 and 87,981.13

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Solution

The fourth proportional to 159,594.44, 220,237.61 and 87,981.13 is: 121,412.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,594.44 : 220,237.61 = 87,981.13 : x
  2. Step 2: Convert to fraction form
    159,594.44/220,237.61 = 87,981.13/x
  3. Step 3: Cross multiply
    159,594.44x = 220,237.61 × 87,981.13
  4. Step 4: Simplify right side
    159,594.44x = 19,376,752,805.80
  5. Step 5: Solve for x
    x = 19,376,752,805.80/159,594.44
  6. Step 6: Final answer
    x = 121,412.45

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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.