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Finding the Fourth Proportional to 359,387.70, 539,081.55 and 264,909.30

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Solution

The fourth proportional to 359,387.70, 539,081.55 and 264,909.30 is: 397,363.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,387.70 : 539,081.55 = 264,909.30 : x
  2. Step 2: Convert to fraction form
    359,387.70/539,081.55 = 264,909.30/x
  3. Step 3: Cross multiply
    359,387.70x = 539,081.55 × 264,909.30
  4. Step 4: Simplify right side
    359,387.70x = 142,807,716,053.42
  5. Step 5: Solve for x
    x = 142,807,716,053.42/359,387.70
  6. Step 6: Final answer
    x = 397,363.95

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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.