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Finding the Fourth Proportional to 404,535.96, 558,019.13 and 261,380.43

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Solution

The fourth proportional to 404,535.96, 558,019.13 and 261,380.43 is: 360,549.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,535.96 : 558,019.13 = 261,380.43 : x
  2. Step 2: Convert to fraction form
    404,535.96/558,019.13 = 261,380.43/x
  3. Step 3: Cross multiply
    404,535.96x = 558,019.13 × 261,380.43
  4. Step 4: Simplify right side
    404,535.96x = 145,855,278,840.72
  5. Step 5: Solve for x
    x = 145,855,278,840.72/404,535.96
  6. Step 6: Final answer
    x = 360,549.60

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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.