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Finding the Fourth Proportional to 359,725.49, 496,481.21 and 343,781.81

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Solution

The fourth proportional to 359,725.49, 496,481.21 and 343,781.81 is: 474,476.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,725.49 : 496,481.21 = 343,781.81 : x
  2. Step 2: Convert to fraction form
    359,725.49/496,481.21 = 343,781.81/x
  3. Step 3: Cross multiply
    359,725.49x = 496,481.21 × 343,781.81
  4. Step 4: Simplify right side
    359,725.49x = 170,681,209,004.79
  5. Step 5: Solve for x
    x = 170,681,209,004.79/359,725.49
  6. Step 6: Final answer
    x = 474,476.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.