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Finding the Fourth Proportional to 13,008.26, 17,951.43 and 7,039.99

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Solution

The fourth proportional to 13,008.26, 17,951.43 and 7,039.99 is: 9,715.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,008.26 : 17,951.43 = 7,039.99 : x
  2. Step 2: Convert to fraction form
    13,008.26/17,951.43 = 7,039.99/x
  3. Step 3: Cross multiply
    13,008.26x = 17,951.43 × 7,039.99
  4. Step 4: Simplify right side
    13,008.26x = 126,377,797.93
  5. Step 5: Solve for x
    x = 126,377,797.93/13,008.26
  6. Step 6: Final answer
    x = 9,715.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.