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Finding the Fourth Proportional to 261,396.59, 391,936.73 and 117,276.02

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Solution

The fourth proportional to 261,396.59, 391,936.73 and 117,276.02 is: 175,843.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,396.59 : 391,936.73 = 117,276.02 : x
  2. Step 2: Convert to fraction form
    261,396.59/391,936.73 = 117,276.02/x
  3. Step 3: Cross multiply
    261,396.59x = 391,936.73 × 117,276.02
  4. Step 4: Simplify right side
    261,396.59x = 45,964,777,240.15
  5. Step 5: Solve for x
    x = 45,964,777,240.15/261,396.59
  6. Step 6: Final answer
    x = 175,843.07

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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.