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Finding the Fourth Proportional to 7,405.88, 10,220.12 and 4,093.88

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Solution

The fourth proportional to 7,405.88, 10,220.12 and 4,093.88 is: 5,649.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,405.88 : 10,220.12 = 4,093.88 : x
  2. Step 2: Convert to fraction form
    7,405.88/10,220.12 = 4,093.88/x
  3. Step 3: Cross multiply
    7,405.88x = 10,220.12 × 4,093.88
  4. Step 4: Simplify right side
    7,405.88x = 41,839,873.30
  5. Step 5: Solve for x
    x = 41,839,873.30/7,405.88
  6. Step 6: Final answer
    x = 5,649.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.