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Finding the Fourth Proportional to 92,882.82, 128,217.54 and 62,709.02

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Solution

The fourth proportional to 92,882.82, 128,217.54 and 62,709.02 is: 86,564.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,882.82 : 128,217.54 = 62,709.02 : x
  2. Step 2: Convert to fraction form
    92,882.82/128,217.54 = 62,709.02/x
  3. Step 3: Cross multiply
    92,882.82x = 128,217.54 × 62,709.02
  4. Step 4: Simplify right side
    92,882.82x = 8,040,396,280.21
  5. Step 5: Solve for x
    x = 8,040,396,280.21/92,882.82
  6. Step 6: Final answer
    x = 86,564.95

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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.