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Finding the Fourth Proportional to 311,999.28, 430,559.10 and 176,062.11

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Solution

The fourth proportional to 311,999.28, 430,559.10 and 176,062.11 is: 242,965.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,999.28 : 430,559.10 = 176,062.11 : x
  2. Step 2: Convert to fraction form
    311,999.28/430,559.10 = 176,062.11/x
  3. Step 3: Cross multiply
    311,999.28x = 430,559.10 × 176,062.11
  4. Step 4: Simplify right side
    311,999.28x = 75,805,143,625.70
  5. Step 5: Solve for x
    x = 75,805,143,625.70/311,999.28
  6. Step 6: Final answer
    x = 242,965.76

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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.