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Finding the Fourth Proportional to 541,134.40, 746,700.12 and 311,766.72

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Solution

The fourth proportional to 541,134.40, 746,700.12 and 311,766.72 is: 430,200.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,134.40 : 746,700.12 = 311,766.72 : x
  2. Step 2: Convert to fraction form
    541,134.40/746,700.12 = 311,766.72/x
  3. Step 3: Cross multiply
    541,134.40x = 746,700.12 × 311,766.72
  4. Step 4: Simplify right side
    541,134.40x = 232,796,247,236.01
  5. Step 5: Solve for x
    x = 232,796,247,236.01/541,134.40
  6. Step 6: Final answer
    x = 430,200.42

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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.