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Finding the Fourth Proportional to 116,876.40, 161,294.13 and 65,891.03

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Solution

The fourth proportional to 116,876.40, 161,294.13 and 65,891.03 is: 90,932.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,876.40 : 161,294.13 = 65,891.03 : x
  2. Step 2: Convert to fraction form
    116,876.40/161,294.13 = 65,891.03/x
  3. Step 3: Cross multiply
    116,876.40x = 161,294.13 × 65,891.03
  4. Step 4: Simplify right side
    116,876.40x = 10,627,835,552.18
  5. Step 5: Solve for x
    x = 10,627,835,552.18/116,876.40
  6. Step 6: Final answer
    x = 90,932.26

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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.