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Finding the Fourth Proportional to 74,692.10, 103,073.76 and 40,700.88

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Solution

The fourth proportional to 74,692.10, 103,073.76 and 40,700.88 is: 56,166.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,692.10 : 103,073.76 = 40,700.88 : x
  2. Step 2: Convert to fraction form
    74,692.10/103,073.76 = 40,700.88/x
  3. Step 3: Cross multiply
    74,692.10x = 103,073.76 × 40,700.88
  4. Step 4: Simplify right side
    74,692.10x = 4,195,192,736.91
  5. Step 5: Solve for x
    x = 4,195,192,736.91/74,692.10
  6. Step 6: Final answer
    x = 56,166.48

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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.