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Finding the Fourth Proportional to 108,605.40, 149,881.44 and 60,874.08

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Solution

The fourth proportional to 108,605.40, 149,881.44 and 60,874.08 is: 84,009.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,605.40 : 149,881.44 = 60,874.08 : x
  2. Step 2: Convert to fraction form
    108,605.40/149,881.44 = 60,874.08/x
  3. Step 3: Cross multiply
    108,605.40x = 149,881.44 × 60,874.08
  4. Step 4: Simplify right side
    108,605.40x = 9,123,894,769.08
  5. Step 5: Solve for x
    x = 9,123,894,769.08/108,605.40
  6. Step 6: Final answer
    x = 84,009.59

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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.