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Finding the Fourth Proportional to 573,569.82, 791,521.44 and 318,918.78

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Solution

The fourth proportional to 573,569.82, 791,521.44 and 318,918.78 is: 440,105.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,569.82 : 791,521.44 = 318,918.78 : x
  2. Step 2: Convert to fraction form
    573,569.82/791,521.44 = 318,918.78/x
  3. Step 3: Cross multiply
    573,569.82x = 791,521.44 × 318,918.78
  4. Step 4: Simplify right side
    573,569.82x = 252,431,051,988.64
  5. Step 5: Solve for x
    x = 252,431,051,988.64/573,569.82
  6. Step 6: Final answer
    x = 440,105.19

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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.