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Finding the Fourth Proportional to 368,614.55, 552,490.40 and 140,760.92

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Solution

The fourth proportional to 368,614.55, 552,490.40 and 140,760.92 is: 210,976.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,614.55 : 552,490.40 = 140,760.92 : x
  2. Step 2: Convert to fraction form
    368,614.55/552,490.40 = 140,760.92/x
  3. Step 3: Cross multiply
    368,614.55x = 552,490.40 × 140,760.92
  4. Step 4: Simplify right side
    368,614.55x = 77,769,053,528.91
  5. Step 5: Solve for x
    x = 77,769,053,528.91/368,614.55
  6. Step 6: Final answer
    x = 210,976.63

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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.