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Finding the Fourth Proportional to 13,360.68, 20,040.84 and 4,126.68

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Solution

The fourth proportional to 13,360.68, 20,040.84 and 4,126.68 is: 6,189.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,360.68 : 20,040.84 = 4,126.68 : x
  2. Step 2: Convert to fraction form
    13,360.68/20,040.84 = 4,126.68/x
  3. Step 3: Cross multiply
    13,360.68x = 20,040.84 × 4,126.68
  4. Step 4: Simplify right side
    13,360.68x = 82,702,133.61
  5. Step 5: Solve for x
    x = 82,702,133.61/13,360.68
  6. Step 6: Final answer
    x = 6,189.96

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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.