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Finding the Fourth Proportional to 10,990.88, 16,488.48 and 4,065.44

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Solution

The fourth proportional to 10,990.88, 16,488.48 and 4,065.44 is: 6,098.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.88 : 16,488.48 = 4,065.44 : x
  2. Step 2: Convert to fraction form
    10,990.88/16,488.48 = 4,065.44/x
  3. Step 3: Cross multiply
    10,990.88x = 16,488.48 × 4,065.44
  4. Step 4: Simplify right side
    10,990.88x = 67,032,926.13
  5. Step 5: Solve for x
    x = 67,032,926.13/10,990.88
  6. Step 6: Final answer
    x = 6,098.96

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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.