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Finding the Fourth Proportional to 74,704.59, 103,091.13 and 40,713.54

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Solution

The fourth proportional to 74,704.59, 103,091.13 and 40,713.54 is: 56,184.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,704.59 : 103,091.13 = 40,713.54 : x
  2. Step 2: Convert to fraction form
    74,704.59/103,091.13 = 40,713.54/x
  3. Step 3: Cross multiply
    74,704.59x = 103,091.13 × 40,713.54
  4. Step 4: Simplify right side
    74,704.59x = 4,197,204,844.90
  5. Step 5: Solve for x
    x = 4,197,204,844.90/74,704.59
  6. Step 6: Final answer
    x = 56,184.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.