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Finding the Fourth Proportional to 158,543.80, 218,787.96 and 86,924.44

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Solution

The fourth proportional to 158,543.80, 218,787.96 and 86,924.44 is: 119,954.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,543.80 : 218,787.96 = 86,924.44 : x
  2. Step 2: Convert to fraction form
    158,543.80/218,787.96 = 86,924.44/x
  3. Step 3: Cross multiply
    158,543.80x = 218,787.96 × 86,924.44
  4. Step 4: Simplify right side
    158,543.80x = 19,018,020,901.74
  5. Step 5: Solve for x
    x = 19,018,020,901.74/158,543.80
  6. Step 6: Final answer
    x = 119,954.37

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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.