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Finding the Fourth Proportional to 591,046.80, 885,322.20 and 391,462.80

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Solution

The fourth proportional to 591,046.80, 885,322.20 and 391,462.80 is: 586,367.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,046.80 : 885,322.20 = 391,462.80 : x
  2. Step 2: Convert to fraction form
    591,046.80/885,322.20 = 391,462.80/x
  3. Step 3: Cross multiply
    591,046.80x = 885,322.20 × 391,462.80
  4. Step 4: Simplify right side
    591,046.80x = 346,570,707,314.16
  5. Step 5: Solve for x
    x = 346,570,707,314.16/591,046.80
  6. Step 6: Final answer
    x = 586,367.62

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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.