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Finding the Fourth Proportional to 45,133.74, 67,687.56 and 13,542.48

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Solution

The fourth proportional to 45,133.74, 67,687.56 and 13,542.48 is: 20,309.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,133.74 : 67,687.56 = 13,542.48 : x
  2. Step 2: Convert to fraction form
    45,133.74/67,687.56 = 13,542.48/x
  3. Step 3: Cross multiply
    45,133.74x = 67,687.56 × 13,542.48
  4. Step 4: Simplify right side
    45,133.74x = 916,657,427.55
  5. Step 5: Solve for x
    x = 916,657,427.55/45,133.74
  6. Step 6: Final answer
    x = 20,309.80

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.