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Finding the Fourth Proportional to 158,551.16, 218,801.25 and 86,932.44

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Solution

The fourth proportional to 158,551.16, 218,801.25 and 86,932.44 is: 119,967.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,551.16 : 218,801.25 = 86,932.44 : x
  2. Step 2: Convert to fraction form
    158,551.16/218,801.25 = 86,932.44/x
  3. Step 3: Cross multiply
    158,551.16x = 218,801.25 × 86,932.44
  4. Step 4: Simplify right side
    158,551.16x = 19,020,926,537.55
  5. Step 5: Solve for x
    x = 19,020,926,537.55/158,551.16
  6. Step 6: Final answer
    x = 119,967.13

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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.