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Finding the Fourth Proportional to 93,805.65, 140,560.25 and 75,206.43

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Solution

The fourth proportional to 93,805.65, 140,560.25 and 75,206.43 is: 112,690.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,805.65 : 140,560.25 = 75,206.43 : x
  2. Step 2: Convert to fraction form
    93,805.65/140,560.25 = 75,206.43/x
  3. Step 3: Cross multiply
    93,805.65x = 140,560.25 × 75,206.43
  4. Step 4: Simplify right side
    93,805.65x = 10,571,034,226.38
  5. Step 5: Solve for x
    x = 10,571,034,226.38/93,805.65
  6. Step 6: Final answer
    x = 112,690.81

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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.