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Finding the Fourth Proportional to 40,575.61, 60,859.99 and 13,919.41

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Solution

The fourth proportional to 40,575.61, 60,859.99 and 13,919.41 is: 20,877.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,575.61 : 60,859.99 = 13,919.41 : x
  2. Step 2: Convert to fraction form
    40,575.61/60,859.99 = 13,919.41/x
  3. Step 3: Cross multiply
    40,575.61x = 60,859.99 × 13,919.41
  4. Step 4: Simplify right side
    40,575.61x = 847,135,153.41
  5. Step 5: Solve for x
    x = 847,135,153.41/40,575.61
  6. Step 6: Final answer
    x = 20,877.94

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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.