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Finding the Fourth Proportional to 97,840.80, 146,761.20 and 64,015.20

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Solution

The fourth proportional to 97,840.80, 146,761.20 and 64,015.20 is: 96,022.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,840.80 : 146,761.20 = 64,015.20 : x
  2. Step 2: Convert to fraction form
    97,840.80/146,761.20 = 64,015.20/x
  3. Step 3: Cross multiply
    97,840.80x = 146,761.20 × 64,015.20
  4. Step 4: Simplify right side
    97,840.80x = 9,394,947,570.24
  5. Step 5: Solve for x
    x = 9,394,947,570.24/97,840.80
  6. Step 6: Final answer
    x = 96,022.80

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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.