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Finding the Fourth Proportional to 13,700.88, 20,560.77 and 4,936.14

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Solution

The fourth proportional to 13,700.88, 20,560.77 and 4,936.14 is: 7,407.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,700.88 : 20,560.77 = 4,936.14 : x
  2. Step 2: Convert to fraction form
    13,700.88/20,560.77 = 4,936.14/x
  3. Step 3: Cross multiply
    13,700.88x = 20,560.77 × 4,936.14
  4. Step 4: Simplify right side
    13,700.88x = 101,490,839.23
  5. Step 5: Solve for x
    x = 101,490,839.23/13,700.88
  6. Step 6: Final answer
    x = 7,407.61

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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.