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Finding the Fourth Proportional to 8,632.56, 11,908.62 and 5,449.80

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Solution

The fourth proportional to 8,632.56, 11,908.62 and 5,449.80 is: 7,518.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,632.56 : 11,908.62 = 5,449.80 : x
  2. Step 2: Convert to fraction form
    8,632.56/11,908.62 = 5,449.80/x
  3. Step 3: Cross multiply
    8,632.56x = 11,908.62 × 5,449.80
  4. Step 4: Simplify right side
    8,632.56x = 64,899,597.28
  5. Step 5: Solve for x
    x = 64,899,597.28/8,632.56
  6. Step 6: Final answer
    x = 7,518.00

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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.