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Finding the Fourth Proportional to 7,073.40, 9,761.46 and 3,886.67

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Solution

The fourth proportional to 7,073.40, 9,761.46 and 3,886.67 is: 5,363.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,073.40 : 9,761.46 = 3,886.67 : x
  2. Step 2: Convert to fraction form
    7,073.40/9,761.46 = 3,886.67/x
  3. Step 3: Cross multiply
    7,073.40x = 9,761.46 × 3,886.67
  4. Step 4: Simplify right side
    7,073.40x = 37,939,524.93
  5. Step 5: Solve for x
    x = 37,939,524.93/7,073.40
  6. Step 6: Final answer
    x = 5,363.69

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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.