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Finding the Fourth Proportional to 559,471.44, 839,206.40 and 259,788.15

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Solution

The fourth proportional to 559,471.44, 839,206.40 and 259,788.15 is: 389,681.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,471.44 : 839,206.40 = 259,788.15 : x
  2. Step 2: Convert to fraction form
    559,471.44/839,206.40 = 259,788.15/x
  3. Step 3: Cross multiply
    559,471.44x = 839,206.40 × 259,788.15
  4. Step 4: Simplify right side
    559,471.44x = 218,015,876,825.22
  5. Step 5: Solve for x
    x = 218,015,876,825.22/559,471.44
  6. Step 6: Final answer
    x = 389,681.87

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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.