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Finding the Fourth Proportional to 82,768.88, 124,110.48 and 40,630.16

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Solution

The fourth proportional to 82,768.88, 124,110.48 and 40,630.16 is: 60,924.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,768.88 : 124,110.48 = 40,630.16 : x
  2. Step 2: Convert to fraction form
    82,768.88/124,110.48 = 40,630.16/x
  3. Step 3: Cross multiply
    82,768.88x = 124,110.48 × 40,630.16
  4. Step 4: Simplify right side
    82,768.88x = 5,042,628,660.08
  5. Step 5: Solve for x
    x = 5,042,628,660.08/82,768.88
  6. Step 6: Final answer
    x = 60,924.21

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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.