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Finding the Fourth Proportional to 8,361.60, 11,540.32 and 7,482.24

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Solution

The fourth proportional to 8,361.60, 11,540.32 and 7,482.24 is: 10,326.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,361.60 : 11,540.32 = 7,482.24 : x
  2. Step 2: Convert to fraction form
    8,361.60/11,540.32 = 7,482.24/x
  3. Step 3: Cross multiply
    8,361.60x = 11,540.32 × 7,482.24
  4. Step 4: Simplify right side
    8,361.60x = 86,347,443.92
  5. Step 5: Solve for x
    x = 86,347,443.92/8,361.60
  6. Step 6: Final answer
    x = 10,326.67

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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.