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Finding the Fourth Proportional to 39,863.64, 59,801.94 and 13,565.64

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Solution

The fourth proportional to 39,863.64, 59,801.94 and 13,565.64 is: 20,350.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,863.64 : 59,801.94 = 13,565.64 : x
  2. Step 2: Convert to fraction form
    39,863.64/59,801.94 = 13,565.64/x
  3. Step 3: Cross multiply
    39,863.64x = 59,801.94 × 13,565.64
  4. Step 4: Simplify right side
    39,863.64x = 811,251,589.34
  5. Step 5: Solve for x
    x = 811,251,589.34/39,863.64
  6. Step 6: Final answer
    x = 20,350.67

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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.