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Finding the Fourth Proportional to 61,921.60, 93,076.80 and 60,755.20

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Solution

The fourth proportional to 61,921.60, 93,076.80 and 60,755.20 is: 91,323.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,921.60 : 93,076.80 = 60,755.20 : x
  2. Step 2: Convert to fraction form
    61,921.60/93,076.80 = 60,755.20/x
  3. Step 3: Cross multiply
    61,921.60x = 93,076.80 × 60,755.20
  4. Step 4: Simplify right side
    61,921.60x = 5,654,899,599.36
  5. Step 5: Solve for x
    x = 5,654,899,599.36/61,921.60
  6. Step 6: Final answer
    x = 91,323.54

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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.