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Finding the Fourth Proportional to 591,049.80, 885,326.70 and 391,465.80

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Solution

The fourth proportional to 591,049.80, 885,326.70 and 391,465.80 is: 586,372.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,049.80 : 885,326.70 = 391,465.80 : x
  2. Step 2: Convert to fraction form
    591,049.80/885,326.70 = 391,465.80/x
  3. Step 3: Cross multiply
    591,049.80x = 885,326.70 × 391,465.80
  4. Step 4: Simplify right side
    591,049.80x = 346,575,124,876.86
  5. Step 5: Solve for x
    x = 346,575,124,876.86/591,049.80
  6. Step 6: Final answer
    x = 586,372.12

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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.