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Finding the Fourth Proportional to 574,643.76, 861,374.20 and 254,946.18

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Solution

The fourth proportional to 574,643.76, 861,374.20 and 254,946.18 is: 382,156.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,643.76 : 861,374.20 = 254,946.18 : x
  2. Step 2: Convert to fraction form
    574,643.76/861,374.20 = 254,946.18/x
  3. Step 3: Cross multiply
    574,643.76x = 861,374.20 × 254,946.18
  4. Step 4: Simplify right side
    574,643.76x = 219,604,061,840.56
  5. Step 5: Solve for x
    x = 219,604,061,840.56/574,643.76
  6. Step 6: Final answer
    x = 382,156.87

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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.