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Finding the Fourth Proportional to 132,776.80, 199,165.20 and 122,279.20

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Solution

The fourth proportional to 132,776.80, 199,165.20 and 122,279.20 is: 183,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,776.80 : 199,165.20 = 122,279.20 : x
  2. Step 2: Convert to fraction form
    132,776.80/199,165.20 = 122,279.20/x
  3. Step 3: Cross multiply
    132,776.80x = 199,165.20 × 122,279.20
  4. Step 4: Simplify right side
    132,776.80x = 24,353,761,323.84
  5. Step 5: Solve for x
    x = 24,353,761,323.84/132,776.80
  6. Step 6: Final answer
    x = 183,418.80

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1.5x scale

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.