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Finding the Fourth Proportional to 120,696.65, 180,753.57 and 60,535.92

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Solution

The fourth proportional to 120,696.65, 180,753.57 and 60,535.92 is: 90,657.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,696.65 : 180,753.57 = 60,535.92 : x
  2. Step 2: Convert to fraction form
    120,696.65/180,753.57 = 60,535.92/x
  3. Step 3: Cross multiply
    120,696.65x = 180,753.57 × 60,535.92
  4. Step 4: Simplify right side
    120,696.65x = 10,942,083,653.23
  5. Step 5: Solve for x
    x = 10,942,083,653.23/120,696.65
  6. Step 6: Final answer
    x = 90,657.72

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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.