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Finding the Fourth Proportional to 543,217.80, 814,826.70 and 403,249.80

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Solution

The fourth proportional to 543,217.80, 814,826.70 and 403,249.80 is: 604,874.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,217.80 : 814,826.70 = 403,249.80 : x
  2. Step 2: Convert to fraction form
    543,217.80/814,826.70 = 403,249.80/x
  3. Step 3: Cross multiply
    543,217.80x = 814,826.70 × 403,249.80
  4. Step 4: Simplify right side
    543,217.80x = 328,578,703,809.66
  5. Step 5: Solve for x
    x = 328,578,703,809.66/543,217.80
  6. Step 6: Final answer
    x = 604,874.70

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Double scale
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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.