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Finding the Fourth Proportional to 98,755.84, 136,195.32 and 71,961.04

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Solution

The fourth proportional to 98,755.84, 136,195.32 and 71,961.04 is: 99,242.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,755.84 : 136,195.32 = 71,961.04 : x
  2. Step 2: Convert to fraction form
    98,755.84/136,195.32 = 71,961.04/x
  3. Step 3: Cross multiply
    98,755.84x = 136,195.32 × 71,961.04
  4. Step 4: Simplify right side
    98,755.84x = 9,800,756,870.33
  5. Step 5: Solve for x
    x = 9,800,756,870.33/98,755.84
  6. Step 6: Final answer
    x = 99,242.30

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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.