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Finding the Fourth Proportional to 169,876.80, 254,845.80 and 69,982.38

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Solution

The fourth proportional to 169,876.80, 254,845.80 and 69,982.38 is: 104,986.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,876.80 : 254,845.80 = 69,982.38 : x
  2. Step 2: Convert to fraction form
    169,876.80/254,845.80 = 69,982.38/x
  3. Step 3: Cross multiply
    169,876.80x = 254,845.80 × 69,982.38
  4. Step 4: Simplify right side
    169,876.80x = 17,834,715,617.00
  5. Step 5: Solve for x
    x = 17,834,715,617.00/169,876.80
  6. Step 6: Final answer
    x = 104,986.18

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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.