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Finding the Fourth Proportional to 8,736.66, 12,057.46 and 5,380.22

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Solution

The fourth proportional to 8,736.66, 12,057.46 and 5,380.22 is: 7,425.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,736.66 : 12,057.46 = 5,380.22 : x
  2. Step 2: Convert to fraction form
    8,736.66/12,057.46 = 5,380.22/x
  3. Step 3: Cross multiply
    8,736.66x = 12,057.46 × 5,380.22
  4. Step 4: Simplify right side
    8,736.66x = 64,871,804.13
  5. Step 5: Solve for x
    x = 64,871,804.13/8,736.66
  6. Step 6: Final answer
    x = 7,425.24

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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.