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Finding the Fourth Proportional to 591,996.80, 887,266.20 and 402,456.80

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Solution

The fourth proportional to 591,996.80, 887,266.20 and 402,456.80 is: 603,189.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,996.80 : 887,266.20 = 402,456.80 : x
  2. Step 2: Convert to fraction form
    591,996.80/887,266.20 = 402,456.80/x
  3. Step 3: Cross multiply
    591,996.80x = 887,266.20 × 402,456.80
  4. Step 4: Simplify right side
    591,996.80x = 357,086,315,600.16
  5. Step 5: Solve for x
    x = 357,086,315,600.16/591,996.80
  6. Step 6: Final answer
    x = 603,189.60

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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.