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Finding the Fourth Proportional to 9,892.55, 13,660.97 and 6,361.89

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Solution

The fourth proportional to 9,892.55, 13,660.97 and 6,361.89 is: 8,785.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,892.55 : 13,660.97 = 6,361.89 : x
  2. Step 2: Convert to fraction form
    9,892.55/13,660.97 = 6,361.89/x
  3. Step 3: Cross multiply
    9,892.55x = 13,660.97 × 6,361.89
  4. Step 4: Simplify right side
    9,892.55x = 86,909,588.43
  5. Step 5: Solve for x
    x = 86,909,588.43/9,892.55
  6. Step 6: Final answer
    x = 8,785.36

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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.