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Finding the Fourth Proportional to 61,608.56, 91,967.20 and 54,135.14

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Solution

The fourth proportional to 61,608.56, 91,967.20 and 54,135.14 is: 80,811.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,608.56 : 91,967.20 = 54,135.14 : x
  2. Step 2: Convert to fraction form
    61,608.56/91,967.20 = 54,135.14/x
  3. Step 3: Cross multiply
    61,608.56x = 91,967.20 × 54,135.14
  4. Step 4: Simplify right side
    61,608.56x = 4,978,657,247.41
  5. Step 5: Solve for x
    x = 4,978,657,247.41/61,608.56
  6. Step 6: Final answer
    x = 80,811.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.