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Finding the Fourth Proportional to 116,867.76, 161,241.62 and 71,498.45

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Solution

The fourth proportional to 116,867.76, 161,241.62 and 71,498.45 is: 98,645.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,867.76 : 161,241.62 = 71,498.45 : x
  2. Step 2: Convert to fraction form
    116,867.76/161,241.62 = 71,498.45/x
  3. Step 3: Cross multiply
    116,867.76x = 161,241.62 × 71,498.45
  4. Step 4: Simplify right side
    116,867.76x = 11,528,525,446.30
  5. Step 5: Solve for x
    x = 11,528,525,446.30/116,867.76
  6. Step 6: Final answer
    x = 98,645.90

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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.