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Finding the Fourth Proportional to 158,236.92, 218,368.20 and 86,617.56

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Solution

The fourth proportional to 158,236.92, 218,368.20 and 86,617.56 is: 119,532.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,236.92 : 218,368.20 = 86,617.56 : x
  2. Step 2: Convert to fraction form
    158,236.92/218,368.20 = 86,617.56/x
  3. Step 3: Cross multiply
    158,236.92x = 218,368.20 × 86,617.56
  4. Step 4: Simplify right side
    158,236.92x = 18,914,520,665.59
  5. Step 5: Solve for x
    x = 18,914,520,665.59/158,236.92
  6. Step 6: Final answer
    x = 119,532.92

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1.5x scale

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.