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Finding the Fourth Proportional to 573,618.13, 791,593.67 and 318,963.85

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Solution

The fourth proportional to 573,618.13, 791,593.67 and 318,963.85 is: 440,170.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,618.13 : 791,593.67 = 318,963.85 : x
  2. Step 2: Convert to fraction form
    573,618.13/791,593.67 = 318,963.85/x
  3. Step 3: Cross multiply
    573,618.13x = 791,593.67 × 318,963.85
  4. Step 4: Simplify right side
    573,618.13x = 252,489,763,437.26
  5. Step 5: Solve for x
    x = 252,489,763,437.26/573,618.13
  6. Step 6: Final answer
    x = 440,170.47

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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.