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Finding the Fourth Proportional to 39,906.70, 59,868.15 and 13,614.10

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Solution

The fourth proportional to 39,906.70, 59,868.15 and 13,614.10 is: 20,423.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,906.70 : 59,868.15 = 13,614.10 : x
  2. Step 2: Convert to fraction form
    39,906.70/59,868.15 = 13,614.10/x
  3. Step 3: Cross multiply
    39,906.70x = 59,868.15 × 13,614.10
  4. Step 4: Simplify right side
    39,906.70x = 815,050,980.92
  5. Step 5: Solve for x
    x = 815,050,980.92/39,906.70
  6. Step 6: Final answer
    x = 20,423.91

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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.