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Finding the Fourth Proportional to 11,315.70, 16,958.16 and 4,748.22

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Solution

The fourth proportional to 11,315.70, 16,958.16 and 4,748.22 is: 7,115.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.70 : 16,958.16 = 4,748.22 : x
  2. Step 2: Convert to fraction form
    11,315.70/16,958.16 = 4,748.22/x
  3. Step 3: Cross multiply
    11,315.70x = 16,958.16 × 4,748.22
  4. Step 4: Simplify right side
    11,315.70x = 80,521,074.48
  5. Step 5: Solve for x
    x = 80,521,074.48/11,315.70
  6. Step 6: Final answer
    x = 7,115.87

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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.