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Finding the Fourth Proportional to 571,418.12, 857,269.96 and 403,266.69

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Solution

The fourth proportional to 571,418.12, 857,269.96 and 403,266.69 is: 605,000.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,418.12 : 857,269.96 = 403,266.69 : x
  2. Step 2: Convert to fraction form
    571,418.12/857,269.96 = 403,266.69/x
  3. Step 3: Cross multiply
    571,418.12x = 857,269.96 × 403,266.69
  4. Step 4: Simplify right side
    571,418.12x = 345,708,418,197.47
  5. Step 5: Solve for x
    x = 345,708,418,197.47/571,418.12
  6. Step 6: Final answer
    x = 605,000.79

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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.