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Finding the Fourth Proportional to 106,687.62, 147,165.56 and 68,984.10

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Solution

The fourth proportional to 106,687.62, 147,165.56 and 68,984.10 is: 95,157.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,687.62 : 147,165.56 = 68,984.10 : x
  2. Step 2: Convert to fraction form
    106,687.62/147,165.56 = 68,984.10/x
  3. Step 3: Cross multiply
    106,687.62x = 147,165.56 × 68,984.10
  4. Step 4: Simplify right side
    106,687.62x = 10,152,083,707.60
  5. Step 5: Solve for x
    x = 10,152,083,707.60/106,687.62
  6. Step 6: Final answer
    x = 95,157.09

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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.