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Finding the Fourth Proportional to 61,187.76, 91,633.80 and 34,812.60

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Solution

The fourth proportional to 61,187.76, 91,633.80 and 34,812.60 is: 52,134.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,187.76 : 91,633.80 = 34,812.60 : x
  2. Step 2: Convert to fraction form
    61,187.76/91,633.80 = 34,812.60/x
  3. Step 3: Cross multiply
    61,187.76x = 91,633.80 × 34,812.60
  4. Step 4: Simplify right side
    61,187.76x = 3,190,010,825.88
  5. Step 5: Solve for x
    x = 3,190,010,825.88/61,187.76
  6. Step 6: Final answer
    x = 52,134.79

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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.