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Finding the Fourth Proportional to 114,343.92, 171,198.96 and 86,178.72

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Solution

The fourth proportional to 114,343.92, 171,198.96 and 86,178.72 is: 129,029.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,343.92 : 171,198.96 = 86,178.72 : x
  2. Step 2: Convert to fraction form
    114,343.92/171,198.96 = 86,178.72/x
  3. Step 3: Cross multiply
    114,343.92x = 171,198.96 × 86,178.72
  4. Step 4: Simplify right side
    114,343.92x = 14,753,707,238.13
  5. Step 5: Solve for x
    x = 14,753,707,238.13/114,343.92
  6. Step 6: Final answer
    x = 129,029.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.