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Finding the Fourth Proportional to 40,615.40, 60,872.36 and 19,551.53

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Solution

The fourth proportional to 40,615.40, 60,872.36 and 19,551.53 is: 29,302.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,615.40 : 60,872.36 = 19,551.53 : x
  2. Step 2: Convert to fraction form
    40,615.40/60,872.36 = 19,551.53/x
  3. Step 3: Cross multiply
    40,615.40x = 60,872.36 × 19,551.53
  4. Step 4: Simplify right side
    40,615.40x = 1,190,147,594.70
  5. Step 5: Solve for x
    x = 1,190,147,594.70/40,615.40
  6. Step 6: Final answer
    x = 29,302.87

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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.