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Finding the Fourth Proportional to 7,015.92, 9,680.20 and 4,751.43

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Solution

The fourth proportional to 7,015.92, 9,680.20 and 4,751.43 is: 6,555.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,015.92 : 9,680.20 = 4,751.43 : x
  2. Step 2: Convert to fraction form
    7,015.92/9,680.20 = 4,751.43/x
  3. Step 3: Cross multiply
    7,015.92x = 9,680.20 × 4,751.43
  4. Step 4: Simplify right side
    7,015.92x = 45,994,792.69
  5. Step 5: Solve for x
    x = 45,994,792.69/7,015.92
  6. Step 6: Final answer
    x = 6,555.77

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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.