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Finding the Fourth Proportional to 21,867.21, 32,801.54 and 7,076.25

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Solution

The fourth proportional to 21,867.21, 32,801.54 and 7,076.25 is: 10,614.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,867.21 : 32,801.54 = 7,076.25 : x
  2. Step 2: Convert to fraction form
    21,867.21/32,801.54 = 7,076.25/x
  3. Step 3: Cross multiply
    21,867.21x = 32,801.54 × 7,076.25
  4. Step 4: Simplify right side
    21,867.21x = 232,111,862.04
  5. Step 5: Solve for x
    x = 232,111,862.04/21,867.21
  6. Step 6: Final answer
    x = 10,614.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.