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Finding the Fourth Proportional to 23,896.35, 32,889.90 and 21,045.09

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Solution

The fourth proportional to 23,896.35, 32,889.90 and 21,045.09 is: 28,965.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,896.35 : 32,889.90 = 21,045.09 : x
  2. Step 2: Convert to fraction form
    23,896.35/32,889.90 = 21,045.09/x
  3. Step 3: Cross multiply
    23,896.35x = 32,889.90 × 21,045.09
  4. Step 4: Simplify right side
    23,896.35x = 692,170,905.59
  5. Step 5: Solve for x
    x = 692,170,905.59/23,896.35
  6. Step 6: Final answer
    x = 28,965.55

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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.