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Finding the Fourth Proportional to 573,617.68, 791,559.90 and 318,963.40

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Solution

The fourth proportional to 573,617.68, 791,559.90 and 318,963.40 is: 440,151.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,617.68 : 791,559.90 = 318,963.40 : x
  2. Step 2: Convert to fraction form
    573,617.68/791,559.90 = 318,963.40/x
  3. Step 3: Cross multiply
    573,617.68x = 791,559.90 × 318,963.40
  4. Step 4: Simplify right side
    573,617.68x = 252,478,637,007.66
  5. Step 5: Solve for x
    x = 252,478,637,007.66/573,617.68
  6. Step 6: Final answer
    x = 440,151.42

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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.