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Finding the Fourth Proportional to 12,098.88, 16,681.92 and 8,736.32

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Solution

The fourth proportional to 12,098.88, 16,681.92 and 8,736.32 is: 12,045.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,098.88 : 16,681.92 = 8,736.32 : x
  2. Step 2: Convert to fraction form
    12,098.88/16,681.92 = 8,736.32/x
  3. Step 3: Cross multiply
    12,098.88x = 16,681.92 × 8,736.32
  4. Step 4: Simplify right side
    12,098.88x = 145,738,591.33
  5. Step 5: Solve for x
    x = 145,738,591.33/12,098.88
  6. Step 6: Final answer
    x = 12,045.63

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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.