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Finding the Fourth Proportional to 574,156.78, 861,359.72 and 174,787.20

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Solution

The fourth proportional to 574,156.78, 861,359.72 and 174,787.20 is: 262,218.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,156.78 : 861,359.72 = 174,787.20 : x
  2. Step 2: Convert to fraction form
    574,156.78/861,359.72 = 174,787.20/x
  3. Step 3: Cross multiply
    574,156.78x = 861,359.72 × 174,787.20
  4. Step 4: Simplify right side
    574,156.78x = 150,554,652,777.65
  5. Step 5: Solve for x
    x = 150,554,652,777.65/574,156.78
  6. Step 6: Final answer
    x = 262,218.72

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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.