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Finding the Fourth Proportional to 117,876.63, 162,692.17 and 66,894.11

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Solution

The fourth proportional to 117,876.63, 162,692.17 and 66,894.11 is: 92,326.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,876.63 : 162,692.17 = 66,894.11 : x
  2. Step 2: Convert to fraction form
    117,876.63/162,692.17 = 66,894.11/x
  3. Step 3: Cross multiply
    117,876.63x = 162,692.17 × 66,894.11
  4. Step 4: Simplify right side
    117,876.63x = 10,883,147,916.12
  5. Step 5: Solve for x
    x = 10,883,147,916.12/117,876.63
  6. Step 6: Final answer
    x = 92,326.60

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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.