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Finding the Fourth Proportional to 359,423.55, 539,135.33 and 149,039.55

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Solution

The fourth proportional to 359,423.55, 539,135.33 and 149,039.55 is: 223,559.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,423.55 : 539,135.33 = 149,039.55 : x
  2. Step 2: Convert to fraction form
    359,423.55/539,135.33 = 149,039.55/x
  3. Step 3: Cross multiply
    359,423.55x = 539,135.33 × 149,039.55
  4. Step 4: Simplify right side
    359,423.55x = 80,352,486,227.10
  5. Step 5: Solve for x
    x = 80,352,486,227.10/359,423.55
  6. Step 6: Final answer
    x = 223,559.33

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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.