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Finding the Fourth Proportional to 7,578.88, 11,335.44 and 4,451.44

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Solution

The fourth proportional to 7,578.88, 11,335.44 and 4,451.44 is: 6,657.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,578.88 : 11,335.44 = 4,451.44 : x
  2. Step 2: Convert to fraction form
    7,578.88/11,335.44 = 4,451.44/x
  3. Step 3: Cross multiply
    7,578.88x = 11,335.44 × 4,451.44
  4. Step 4: Simplify right side
    7,578.88x = 50,459,031.03
  5. Step 5: Solve for x
    x = 50,459,031.03/7,578.88
  6. Step 6: Final answer
    x = 6,657.85

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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.