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Finding the Fourth Proportional to 40,871.80, 61,307.70 and 16,247.80

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Solution

The fourth proportional to 40,871.80, 61,307.70 and 16,247.80 is: 24,371.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,871.80 : 61,307.70 = 16,247.80 : x
  2. Step 2: Convert to fraction form
    40,871.80/61,307.70 = 16,247.80/x
  3. Step 3: Cross multiply
    40,871.80x = 61,307.70 × 16,247.80
  4. Step 4: Simplify right side
    40,871.80x = 996,115,248.06
  5. Step 5: Solve for x
    x = 996,115,248.06/40,871.80
  6. Step 6: Final answer
    x = 24,371.70

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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.