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Finding the Fourth Proportional to 207,924.30, 311,886.45 and 74,954.70

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Solution

The fourth proportional to 207,924.30, 311,886.45 and 74,954.70 is: 112,432.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,924.30 : 311,886.45 = 74,954.70 : x
  2. Step 2: Convert to fraction form
    207,924.30/311,886.45 = 74,954.70/x
  3. Step 3: Cross multiply
    207,924.30x = 311,886.45 × 74,954.70
  4. Step 4: Simplify right side
    207,924.30x = 23,377,355,293.82
  5. Step 5: Solve for x
    x = 23,377,355,293.82/207,924.30
  6. Step 6: Final answer
    x = 112,432.05

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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.