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Finding the Fourth Proportional to 281,195.28, 387,697.49 and 234,694.90

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Solution

The fourth proportional to 281,195.28, 387,697.49 and 234,694.90 is: 323,585.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,195.28 : 387,697.49 = 234,694.90 : x
  2. Step 2: Convert to fraction form
    281,195.28/387,697.49 = 234,694.90/x
  3. Step 3: Cross multiply
    281,195.28x = 387,697.49 × 234,694.90
  4. Step 4: Simplify right side
    281,195.28x = 90,990,623,837.05
  5. Step 5: Solve for x
    x = 90,990,623,837.05/281,195.28
  6. Step 6: Final answer
    x = 323,585.17

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1.5x scale

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.