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Finding the Fourth Proportional to 9,479.70, 14,219.61 and 5,099.22

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Solution

The fourth proportional to 9,479.70, 14,219.61 and 5,099.22 is: 7,648.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,479.70 : 14,219.61 = 5,099.22 : x
  2. Step 2: Convert to fraction form
    9,479.70/14,219.61 = 5,099.22/x
  3. Step 3: Cross multiply
    9,479.70x = 14,219.61 × 5,099.22
  4. Step 4: Simplify right side
    9,479.70x = 72,508,919.70
  5. Step 5: Solve for x
    x = 72,508,919.70/9,479.70
  6. Step 6: Final answer
    x = 7,648.86

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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.