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Finding the Fourth Proportional to 7,063.88, 9,748.44 and 3,920.67

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Solution

The fourth proportional to 7,063.88, 9,748.44 and 3,920.67 is: 5,410.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,063.88 : 9,748.44 = 3,920.67 : x
  2. Step 2: Convert to fraction form
    7,063.88/9,748.44 = 3,920.67/x
  3. Step 3: Cross multiply
    7,063.88x = 9,748.44 × 3,920.67
  4. Step 4: Simplify right side
    7,063.88x = 38,220,416.25
  5. Step 5: Solve for x
    x = 38,220,416.25/7,063.88
  6. Step 6: Final answer
    x = 5,410.69

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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.