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Finding the Fourth Proportional to 23,687.64, 32,688.36 and 13,076.64

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Solution

The fourth proportional to 23,687.64, 32,688.36 and 13,076.64 is: 18,045.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,687.64 : 32,688.36 = 13,076.64 : x
  2. Step 2: Convert to fraction form
    23,687.64/32,688.36 = 13,076.64/x
  3. Step 3: Cross multiply
    23,687.64x = 32,688.36 × 13,076.64
  4. Step 4: Simplify right side
    23,687.64x = 427,453,915.91
  5. Step 5: Solve for x
    x = 427,453,915.91/23,687.64
  6. Step 6: Final answer
    x = 18,045.44

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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.