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Finding the Fourth Proportional to 104,354.13, 156,463.14 and 68,707.56

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Solution

The fourth proportional to 104,354.13, 156,463.14 and 68,707.56 is: 103,016.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,354.13 : 156,463.14 = 68,707.56 : x
  2. Step 2: Convert to fraction form
    104,354.13/156,463.14 = 68,707.56/x
  3. Step 3: Cross multiply
    104,354.13x = 156,463.14 × 68,707.56
  4. Step 4: Simplify right side
    104,354.13x = 10,750,200,579.34
  5. Step 5: Solve for x
    x = 10,750,200,579.34/104,354.13
  6. Step 6: Final answer
    x = 103,016.53

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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.