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Finding the Fourth Proportional to 6,664.22, 9,980.76 and 5,268.18

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Solution

The fourth proportional to 6,664.22, 9,980.76 and 5,268.18 is: 7,889.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,664.22 : 9,980.76 = 5,268.18 : x
  2. Step 2: Convert to fraction form
    6,664.22/9,980.76 = 5,268.18/x
  3. Step 3: Cross multiply
    6,664.22x = 9,980.76 × 5,268.18
  4. Step 4: Simplify right side
    6,664.22x = 52,580,440.22
  5. Step 5: Solve for x
    x = 52,580,440.22/6,664.22
  6. Step 6: Final answer
    x = 7,889.96

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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.