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Finding the Fourth Proportional to 135,307.76, 186,725.07 and 74,882.57

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Solution

The fourth proportional to 135,307.76, 186,725.07 and 74,882.57 is: 103,338.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,307.76 : 186,725.07 = 74,882.57 : x
  2. Step 2: Convert to fraction form
    135,307.76/186,725.07 = 74,882.57/x
  3. Step 3: Cross multiply
    135,307.76x = 186,725.07 × 74,882.57
  4. Step 4: Simplify right side
    135,307.76x = 13,982,453,545.64
  5. Step 5: Solve for x
    x = 13,982,453,545.64/135,307.76
  6. Step 6: Final answer
    x = 103,338.15

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