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Finding the Fourth Proportional to 621.11, 930.79 and 273.92

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Solution

The fourth proportional to 621.11, 930.79 and 273.92 is: 410.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.11 : 930.79 = 273.92 : x
  2. Step 2: Convert to fraction form
    621.11/930.79 = 273.92/x
  3. Step 3: Cross multiply
    621.11x = 930.79 × 273.92
  4. Step 4: Simplify right side
    621.11x = 254,956.66
  5. Step 5: Solve for x
    x = 254,956.66/621.11
  6. Step 6: Final answer
    x = 410.49

Related Problems

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Half scale
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Double scale
Find fourth proportional to 622.11, 932.29 and 274.92
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.