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Finding the Fourth Proportional to 158,595.52, 218,862.12 and 86,976.08

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Solution

The fourth proportional to 158,595.52, 218,862.12 and 86,976.08 is: 120,027.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,595.52 : 218,862.12 = 86,976.08 : x
  2. Step 2: Convert to fraction form
    158,595.52/218,862.12 = 86,976.08/x
  3. Step 3: Cross multiply
    158,595.52x = 218,862.12 × 86,976.08
  4. Step 4: Simplify right side
    158,595.52x = 19,035,769,258.09
  5. Step 5: Solve for x
    x = 19,035,769,258.09/158,595.52
  6. Step 6: Final answer
    x = 120,027.16

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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.