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Finding the Fourth Proportional to 19,213.01, 26,513.90 and 10,715.15

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Solution

The fourth proportional to 19,213.01, 26,513.90 and 10,715.15 is: 14,786.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,213.01 : 26,513.90 = 10,715.15 : x
  2. Step 2: Convert to fraction form
    19,213.01/26,513.90 = 10,715.15/x
  3. Step 3: Cross multiply
    19,213.01x = 26,513.90 × 10,715.15
  4. Step 4: Simplify right side
    19,213.01x = 284,100,283.02
  5. Step 5: Solve for x
    x = 284,100,283.02/19,213.01
  6. Step 6: Final answer
    x = 14,786.87

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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.