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Finding the Fourth Proportional to 9,913.12, 14,872.18 and 6,997.12

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Solution

The fourth proportional to 9,913.12, 14,872.18 and 6,997.12 is: 10,497.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,913.12 : 14,872.18 = 6,997.12 : x
  2. Step 2: Convert to fraction form
    9,913.12/14,872.18 = 6,997.12/x
  3. Step 3: Cross multiply
    9,913.12x = 14,872.18 × 6,997.12
  4. Step 4: Simplify right side
    9,913.12x = 104,062,428.12
  5. Step 5: Solve for x
    x = 104,062,428.12/9,913.12
  6. Step 6: Final answer
    x = 10,497.44

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Similar ratio
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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.