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Finding the Fourth Proportional to 12,400.88, 17,079.96 and 11,466.64

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Solution

The fourth proportional to 12,400.88, 17,079.96 and 11,466.64 is: 15,793.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,400.88 : 17,079.96 = 11,466.64 : x
  2. Step 2: Convert to fraction form
    12,400.88/17,079.96 = 11,466.64/x
  3. Step 3: Cross multiply
    12,400.88x = 17,079.96 × 11,466.64
  4. Step 4: Simplify right side
    12,400.88x = 195,849,752.53
  5. Step 5: Solve for x
    x = 195,849,752.53/12,400.88
  6. Step 6: Final answer
    x = 15,793.21

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1.5x scale

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.