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Finding the Fourth Proportional to 82,515.92, 113,801.76 and 55,623.11

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Solution

The fourth proportional to 82,515.92, 113,801.76 and 55,623.11 is: 76,712.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,515.92 : 113,801.76 = 55,623.11 : x
  2. Step 2: Convert to fraction form
    82,515.92/113,801.76 = 55,623.11/x
  3. Step 3: Cross multiply
    82,515.92x = 113,801.76 × 55,623.11
  4. Step 4: Simplify right side
    82,515.92x = 6,330,007,245.66
  5. Step 5: Solve for x
    x = 6,330,007,245.66/82,515.92
  6. Step 6: Final answer
    x = 76,712.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.