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Finding the Fourth Proportional to 400,863.66, 553,191.72 and 219,586.92

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Solution

The fourth proportional to 400,863.66, 553,191.72 and 219,586.92 is: 303,029.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,863.66 : 553,191.72 = 219,586.92 : x
  2. Step 2: Convert to fraction form
    400,863.66/553,191.72 = 219,586.92/x
  3. Step 3: Cross multiply
    400,863.66x = 553,191.72 × 219,586.92
  4. Step 4: Simplify right side
    400,863.66x = 121,473,665,964.30
  5. Step 5: Solve for x
    x = 121,473,665,964.30/400,863.66
  6. Step 6: Final answer
    x = 303,029.88

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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.