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Finding the Fourth Proportional to 11,361.64, 15,669.84 and 9,354.48

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Solution

The fourth proportional to 11,361.64, 15,669.84 and 9,354.48 is: 12,901.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,361.64 : 15,669.84 = 9,354.48 : x
  2. Step 2: Convert to fraction form
    11,361.64/15,669.84 = 9,354.48/x
  3. Step 3: Cross multiply
    11,361.64x = 15,669.84 × 9,354.48
  4. Step 4: Simplify right side
    11,361.64x = 146,583,204.88
  5. Step 5: Solve for x
    x = 146,583,204.88/11,361.64
  6. Step 6: Final answer
    x = 12,901.59

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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.