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Finding the Fourth Proportional to 13,672.44, 18,867.98 and 8,006.16

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Solution

The fourth proportional to 13,672.44, 18,867.98 and 8,006.16 is: 11,048.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.44 : 18,867.98 = 8,006.16 : x
  2. Step 2: Convert to fraction form
    13,672.44/18,867.98 = 8,006.16/x
  3. Step 3: Cross multiply
    13,672.44x = 18,867.98 × 8,006.16
  4. Step 4: Simplify right side
    13,672.44x = 151,060,066.76
  5. Step 5: Solve for x
    x = 151,060,066.76/13,672.44
  6. Step 6: Final answer
    x = 11,048.51

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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.