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Finding the Fourth Proportional to 312,387.54, 468,577.17 and 75,732.36

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Solution

The fourth proportional to 312,387.54, 468,577.17 and 75,732.36 is: 113,597.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,387.54 : 468,577.17 = 75,732.36 : x
  2. Step 2: Convert to fraction form
    312,387.54/468,577.17 = 75,732.36/x
  3. Step 3: Cross multiply
    312,387.54x = 468,577.17 × 75,732.36
  4. Step 4: Simplify right side
    312,387.54x = 35,486,454,926.22
  5. Step 5: Solve for x
    x = 35,486,454,926.22/312,387.54
  6. Step 6: Final answer
    x = 113,597.54

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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.