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Finding the Fourth Proportional to 548,899.80, 823,349.70 and 194,314.20

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Solution

The fourth proportional to 548,899.80, 823,349.70 and 194,314.20 is: 291,471.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,899.80 : 823,349.70 = 194,314.20 : x
  2. Step 2: Convert to fraction form
    548,899.80/823,349.70 = 194,314.20/x
  3. Step 3: Cross multiply
    548,899.80x = 823,349.70 × 194,314.20
  4. Step 4: Simplify right side
    548,899.80x = 159,988,538,275.74
  5. Step 5: Solve for x
    x = 159,988,538,275.74/548,899.80
  6. Step 6: Final answer
    x = 291,471.30

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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.