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Finding the Fourth Proportional to 576,439.15, 864,690.19 and 239,513.87

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Solution

The fourth proportional to 576,439.15, 864,690.19 and 239,513.87 is: 359,283.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,439.15 : 864,690.19 = 239,513.87 : x
  2. Step 2: Convert to fraction form
    576,439.15/864,690.19 = 239,513.87/x
  3. Step 3: Cross multiply
    576,439.15x = 864,690.19 × 239,513.87
  4. Step 4: Simplify right side
    576,439.15x = 207,105,293,757.94
  5. Step 5: Solve for x
    x = 207,105,293,757.94/576,439.15
  6. Step 6: Final answer
    x = 359,283.88

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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.