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Finding the Fourth Proportional to 158,502.39, 218,732.27 and 86,885.43

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Solution

The fourth proportional to 158,502.39, 218,732.27 and 86,885.43 is: 119,901.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,502.39 : 218,732.27 = 86,885.43 : x
  2. Step 2: Convert to fraction form
    158,502.39/218,732.27 = 86,885.43/x
  3. Step 3: Cross multiply
    158,502.39x = 218,732.27 × 86,885.43
  4. Step 4: Simplify right side
    158,502.39x = 19,004,646,899.40
  5. Step 5: Solve for x
    x = 19,004,646,899.40/158,502.39
  6. Step 6: Final answer
    x = 119,901.33

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.