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Finding the Fourth Proportional to 7,066.80, 10,600.20 and 5,786.80

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Solution

The fourth proportional to 7,066.80, 10,600.20 and 5,786.80 is: 8,680.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,066.80 : 10,600.20 = 5,786.80 : x
  2. Step 2: Convert to fraction form
    7,066.80/10,600.20 = 5,786.80/x
  3. Step 3: Cross multiply
    7,066.80x = 10,600.20 × 5,786.80
  4. Step 4: Simplify right side
    7,066.80x = 61,341,237.36
  5. Step 5: Solve for x
    x = 61,341,237.36/7,066.80
  6. Step 6: Final answer
    x = 8,680.20

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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.