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Finding the Fourth Proportional to 123,908.80, 185,870.28 and 35,155.30

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Solution

The fourth proportional to 123,908.80, 185,870.28 and 35,155.30 is: 52,734.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,908.80 : 185,870.28 = 35,155.30 : x
  2. Step 2: Convert to fraction form
    123,908.80/185,870.28 = 35,155.30/x
  3. Step 3: Cross multiply
    123,908.80x = 185,870.28 × 35,155.30
  4. Step 4: Simplify right side
    123,908.80x = 6,534,325,454.48
  5. Step 5: Solve for x
    x = 6,534,325,454.48/123,908.80
  6. Step 6: Final answer
    x = 52,734.96

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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.