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Finding the Fourth Proportional to 61,195.68, 91,767.60 and 21,762.72

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Solution

The fourth proportional to 61,195.68, 91,767.60 and 21,762.72 is: 32,634.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,195.68 : 91,767.60 = 21,762.72 : x
  2. Step 2: Convert to fraction form
    61,195.68/91,767.60 = 21,762.72/x
  3. Step 3: Cross multiply
    61,195.68x = 91,767.60 × 21,762.72
  4. Step 4: Simplify right side
    61,195.68x = 1,997,112,583.87
  5. Step 5: Solve for x
    x = 1,997,112,583.87/61,195.68
  6. Step 6: Final answer
    x = 32,634.86

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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.