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Finding the Fourth Proportional to 120,974.87, 181,325.43 and 60,907.87

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Solution

The fourth proportional to 120,974.87, 181,325.43 and 60,907.87 is: 91,292.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,974.87 : 181,325.43 = 60,907.87 : x
  2. Step 2: Convert to fraction form
    120,974.87/181,325.43 = 60,907.87/x
  3. Step 3: Cross multiply
    120,974.87x = 181,325.43 × 60,907.87
  4. Step 4: Simplify right side
    120,974.87x = 11,044,145,718.13
  5. Step 5: Solve for x
    x = 11,044,145,718.13/120,974.87
  6. Step 6: Final answer
    x = 91,292.89

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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.