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Finding the Fourth Proportional to 73,690.75, 101,694.45 and 40,156.75

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Solution

The fourth proportional to 73,690.75, 101,694.45 and 40,156.75 is: 55,416.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,690.75 : 101,694.45 = 40,156.75 : x
  2. Step 2: Convert to fraction form
    73,690.75/101,694.45 = 40,156.75/x
  3. Step 3: Cross multiply
    73,690.75x = 101,694.45 × 40,156.75
  4. Step 4: Simplify right side
    73,690.75x = 4,083,718,605.04
  5. Step 5: Solve for x
    x = 4,083,718,605.04/73,690.75
  6. Step 6: Final answer
    x = 55,416.98

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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.