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Finding the Fourth Proportional to 19,697.70, 29,499.57 and 11,360.28

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Solution

The fourth proportional to 19,697.70, 29,499.57 and 11,360.28 is: 17,013.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,697.70 : 29,499.57 = 11,360.28 : x
  2. Step 2: Convert to fraction form
    19,697.70/29,499.57 = 11,360.28/x
  3. Step 3: Cross multiply
    19,697.70x = 29,499.57 × 11,360.28
  4. Step 4: Simplify right side
    19,697.70x = 335,123,375.08
  5. Step 5: Solve for x
    x = 335,123,375.08/19,697.70
  6. Step 6: Final answer
    x = 17,013.33

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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.