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Finding the Fourth Proportional to 103,956.10, 155,606.10 and 100,675.60

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Solution

The fourth proportional to 103,956.10, 155,606.10 and 100,675.60 is: 150,695.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,956.10 : 155,606.10 = 100,675.60 : x
  2. Step 2: Convert to fraction form
    103,956.10/155,606.10 = 100,675.60/x
  3. Step 3: Cross multiply
    103,956.10x = 155,606.10 × 100,675.60
  4. Step 4: Simplify right side
    103,956.10x = 15,665,737,481.16
  5. Step 5: Solve for x
    x = 15,665,737,481.16/103,956.10
  6. Step 6: Final answer
    x = 150,695.70

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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.