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Finding the Fourth Proportional to 541,263.80, 811,895.70 and 208,839.80

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Solution

The fourth proportional to 541,263.80, 811,895.70 and 208,839.80 is: 313,259.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,263.80 : 811,895.70 = 208,839.80 : x
  2. Step 2: Convert to fraction form
    541,263.80/811,895.70 = 208,839.80/x
  3. Step 3: Cross multiply
    541,263.80x = 811,895.70 × 208,839.80
  4. Step 4: Simplify right side
    541,263.80x = 169,556,135,608.86
  5. Step 5: Solve for x
    x = 169,556,135,608.86/541,263.80
  6. Step 6: Final answer
    x = 313,259.70

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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.