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Finding the Fourth Proportional to 61,133.78, 91,704.39 and 16,758.74

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Solution

The fourth proportional to 61,133.78, 91,704.39 and 16,758.74 is: 25,139.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,133.78 : 91,704.39 = 16,758.74 : x
  2. Step 2: Convert to fraction form
    61,133.78/91,704.39 = 16,758.74/x
  3. Step 3: Cross multiply
    61,133.78x = 91,704.39 × 16,758.74
  4. Step 4: Simplify right side
    61,133.78x = 1,536,850,028.87
  5. Step 5: Solve for x
    x = 1,536,850,028.87/61,133.78
  6. Step 6: Final answer
    x = 25,139.13

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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.