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Finding the Fourth Proportional to 291,839.80, 437,759.70 and 167,423.80

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Solution

The fourth proportional to 291,839.80, 437,759.70 and 167,423.80 is: 251,135.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,839.80 : 437,759.70 = 167,423.80 : x
  2. Step 2: Convert to fraction form
    291,839.80/437,759.70 = 167,423.80/x
  3. Step 3: Cross multiply
    291,839.80x = 437,759.70 × 167,423.80
  4. Step 4: Simplify right side
    291,839.80x = 73,291,392,460.86
  5. Step 5: Solve for x
    x = 73,291,392,460.86/291,839.80
  6. Step 6: Final answer
    x = 251,135.70

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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.