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Finding the Fourth Proportional to 61,217.91, 91,817.69 and 29,188.89

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Solution

The fourth proportional to 61,217.91, 91,817.69 and 29,188.89 is: 43,778.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,217.91 : 91,817.69 = 29,188.89 : x
  2. Step 2: Convert to fraction form
    61,217.91/91,817.69 = 29,188.89/x
  3. Step 3: Cross multiply
    61,217.91x = 91,817.69 × 29,188.89
  4. Step 4: Simplify right side
    61,217.91x = 2,680,056,307.52
  5. Step 5: Solve for x
    x = 2,680,056,307.52/61,217.91
  6. Step 6: Final answer
    x = 43,778.96

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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.