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Finding the Fourth Proportional to 83,856.41, 115,720.90 and 62,441.94

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Solution

The fourth proportional to 83,856.41, 115,720.90 and 62,441.94 is: 86,169.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,856.41 : 115,720.90 = 62,441.94 : x
  2. Step 2: Convert to fraction form
    83,856.41/115,720.90 = 62,441.94/x
  3. Step 3: Cross multiply
    83,856.41x = 115,720.90 × 62,441.94
  4. Step 4: Simplify right side
    83,856.41x = 7,225,837,472.70
  5. Step 5: Solve for x
    x = 7,225,837,472.70/83,856.41
  6. Step 6: Final answer
    x = 86,169.17

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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.