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Finding the Fourth Proportional to 540,857.80, 811,286.70 and 341,403.40

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Solution

The fourth proportional to 540,857.80, 811,286.70 and 341,403.40 is: 512,105.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,857.80 : 811,286.70 = 341,403.40 : x
  2. Step 2: Convert to fraction form
    540,857.80/811,286.70 = 341,403.40/x
  3. Step 3: Cross multiply
    540,857.80x = 811,286.70 × 341,403.40
  4. Step 4: Simplify right side
    540,857.80x = 276,976,037,754.78
  5. Step 5: Solve for x
    x = 276,976,037,754.78/540,857.80
  6. Step 6: Final answer
    x = 512,105.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.