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Finding the Fourth Proportional to 108,692.85, 163,039.28 and 61,453.65

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Solution

The fourth proportional to 108,692.85, 163,039.28 and 61,453.65 is: 92,180.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,692.85 : 163,039.28 = 61,453.65 : x
  2. Step 2: Convert to fraction form
    108,692.85/163,039.28 = 61,453.65/x
  3. Step 3: Cross multiply
    108,692.85x = 163,039.28 × 61,453.65
  4. Step 4: Simplify right side
    108,692.85x = 10,019,358,542.10
  5. Step 5: Solve for x
    x = 10,019,358,542.10/108,692.85
  6. Step 6: Final answer
    x = 92,180.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.