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Finding the Fourth Proportional to 61,193.68, 91,791.54 and 16,820.17

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Solution

The fourth proportional to 61,193.68, 91,791.54 and 16,820.17 is: 25,230.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,193.68 : 91,791.54 = 16,820.17 : x
  2. Step 2: Convert to fraction form
    61,193.68/91,791.54 = 16,820.17/x
  3. Step 3: Cross multiply
    61,193.68x = 91,791.54 × 16,820.17
  4. Step 4: Simplify right side
    61,193.68x = 1,543,949,307.36
  5. Step 5: Solve for x
    x = 1,543,949,307.36/61,193.68
  6. Step 6: Final answer
    x = 25,230.54

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1.5x scale

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.