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Finding the Fourth Proportional to 61,156.92, 91,743.88 and 21,704.66

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Solution

The fourth proportional to 61,156.92, 91,743.88 and 21,704.66 is: 32,560.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,156.92 : 91,743.88 = 21,704.66 : x
  2. Step 2: Convert to fraction form
    61,156.92/91,743.88 = 21,704.66/x
  3. Step 3: Cross multiply
    61,156.92x = 91,743.88 × 21,704.66
  4. Step 4: Simplify right side
    61,156.92x = 1,991,269,722.48
  5. Step 5: Solve for x
    x = 1,991,269,722.48/61,156.92
  6. Step 6: Final answer
    x = 32,560.01

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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.