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Finding the Fourth Proportional to 66,411.59, 91,645.29 and 36,196.29

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Solution

The fourth proportional to 66,411.59, 91,645.29 and 36,196.29 is: 49,949.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,411.59 : 91,645.29 = 36,196.29 : x
  2. Step 2: Convert to fraction form
    66,411.59/91,645.29 = 36,196.29/x
  3. Step 3: Cross multiply
    66,411.59x = 91,645.29 × 36,196.29
  4. Step 4: Simplify right side
    66,411.59x = 3,317,219,493.97
  5. Step 5: Solve for x
    x = 3,317,219,493.97/66,411.59
  6. Step 6: Final answer
    x = 49,949.41

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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.