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Finding the Fourth Proportional to 82,750.61, 124,052.11 and 68,824.89

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Solution

The fourth proportional to 82,750.61, 124,052.11 and 68,824.89 is: 103,175.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,750.61 : 124,052.11 = 68,824.89 : x
  2. Step 2: Convert to fraction form
    82,750.61/124,052.11 = 68,824.89/x
  3. Step 3: Cross multiply
    82,750.61x = 124,052.11 × 68,824.89
  4. Step 4: Simplify right side
    82,750.61x = 8,537,872,652.96
  5. Step 5: Solve for x
    x = 8,537,872,652.96/82,750.61
  6. Step 6: Final answer
    x = 103,175.95

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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.