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Finding the Fourth Proportional to 158,942.64, 219,344.92 and 87,324.48

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Solution

The fourth proportional to 158,942.64, 219,344.92 and 87,324.48 is: 120,510.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,942.64 : 219,344.92 = 87,324.48 : x
  2. Step 2: Convert to fraction form
    158,942.64/219,344.92 = 87,324.48/x
  3. Step 3: Cross multiply
    158,942.64x = 219,344.92 × 87,324.48
  4. Step 4: Simplify right side
    158,942.64x = 19,154,181,079.64
  5. Step 5: Solve for x
    x = 19,154,181,079.64/158,942.64
  6. Step 6: Final answer
    x = 120,510.02

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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.