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Finding the Fourth Proportional to 119,656.80, 179,485.20 and 69,793.20

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Solution

The fourth proportional to 119,656.80, 179,485.20 and 69,793.20 is: 104,689.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,656.80 : 179,485.20 = 69,793.20 : x
  2. Step 2: Convert to fraction form
    119,656.80/179,485.20 = 69,793.20/x
  3. Step 3: Cross multiply
    119,656.80x = 179,485.20 × 69,793.20
  4. Step 4: Simplify right side
    119,656.80x = 12,526,846,460.64
  5. Step 5: Solve for x
    x = 12,526,846,460.64/119,656.80
  6. Step 6: Final answer
    x = 104,689.80

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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.