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Finding the Fourth Proportional to 61,112.60, 91,741.80 and 34,479.80

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Solution

The fourth proportional to 61,112.60, 91,741.80 and 34,479.80 is: 51,760.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,112.60 : 91,741.80 = 34,479.80 : x
  2. Step 2: Convert to fraction form
    61,112.60/91,741.80 = 34,479.80/x
  3. Step 3: Cross multiply
    61,112.60x = 91,741.80 × 34,479.80
  4. Step 4: Simplify right side
    61,112.60x = 3,163,238,915.64
  5. Step 5: Solve for x
    x = 3,163,238,915.64/61,112.60
  6. Step 6: Final answer
    x = 51,760.83

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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.