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Finding the Fourth Proportional to 64,616.66, 96,912.20 and 61,412.48

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Solution

The fourth proportional to 64,616.66, 96,912.20 and 61,412.48 is: 92,106.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,616.66 : 96,912.20 = 61,412.48 : x
  2. Step 2: Convert to fraction form
    64,616.66/96,912.20 = 61,412.48/x
  3. Step 3: Cross multiply
    64,616.66x = 96,912.20 × 61,412.48
  4. Step 4: Simplify right side
    64,616.66x = 5,951,617,752.63
  5. Step 5: Solve for x
    x = 5,951,617,752.63/64,616.66
  6. Step 6: Final answer
    x = 92,106.56

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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.