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Finding the Fourth Proportional to 573,201.90, 791,019 and 318,553.02

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Solution

The fourth proportional to 573,201.90, 791,019 and 318,553.02 is: 439,603.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,201.90 : 791,019 = 318,553.02 : x
  2. Step 2: Convert to fraction form
    573,201.90/791,019 = 318,553.02/x
  3. Step 3: Cross multiply
    573,201.90x = 791,019 × 318,553.02
  4. Step 4: Simplify right side
    573,201.90x = 251,981,491,327.38
  5. Step 5: Solve for x
    x = 251,981,491,327.38/573,201.90
  6. Step 6: Final answer
    x = 439,603.38

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1.5x scale

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.