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Finding the Fourth Proportional to 368,434.80, 552,781.80 and 181,321.20

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Solution

The fourth proportional to 368,434.80, 552,781.80 and 181,321.20 is: 272,045.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,434.80 : 552,781.80 = 181,321.20 : x
  2. Step 2: Convert to fraction form
    368,434.80/552,781.80 = 181,321.20/x
  3. Step 3: Cross multiply
    368,434.80x = 552,781.80 × 181,321.20
  4. Step 4: Simplify right side
    368,434.80x = 100,231,059,314.16
  5. Step 5: Solve for x
    x = 100,231,059,314.16/368,434.80
  6. Step 6: Final answer
    x = 272,045.58

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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.