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Finding the Fourth Proportional to 99,696.64, 137,596.44 and 61,983.04

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Solution

The fourth proportional to 99,696.64, 137,596.44 and 61,983.04 is: 85,545.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,696.64 : 137,596.44 = 61,983.04 : x
  2. Step 2: Convert to fraction form
    99,696.64/137,596.44 = 61,983.04/x
  3. Step 3: Cross multiply
    99,696.64x = 137,596.44 × 61,983.04
  4. Step 4: Simplify right side
    99,696.64x = 8,528,645,644.38
  5. Step 5: Solve for x
    x = 8,528,645,644.38/99,696.64
  6. Step 6: Final answer
    x = 85,545.97

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Why These Related Problems?

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