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Finding the Fourth Proportional to 279,934.32, 386,187.51 and 177,905.10

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Solution

The fourth proportional to 279,934.32, 386,187.51 and 177,905.10 is: 245,431.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,934.32 : 386,187.51 = 177,905.10 : x
  2. Step 2: Convert to fraction form
    279,934.32/386,187.51 = 177,905.10/x
  3. Step 3: Cross multiply
    279,934.32x = 386,187.51 × 177,905.10
  4. Step 4: Simplify right side
    279,934.32x = 68,704,729,700.65
  5. Step 5: Solve for x
    x = 68,704,729,700.65/279,934.32
  6. Step 6: Final answer
    x = 245,431.60

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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.