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Finding the Fourth Proportional to 22,899.25, 31,600.97 and 12,963.25

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Solution

The fourth proportional to 22,899.25, 31,600.97 and 12,963.25 is: 17,889.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,899.25 : 31,600.97 = 12,963.25 : x
  2. Step 2: Convert to fraction form
    22,899.25/31,600.97 = 12,963.25/x
  3. Step 3: Cross multiply
    22,899.25x = 31,600.97 × 12,963.25
  4. Step 4: Simplify right side
    22,899.25x = 409,651,209.54
  5. Step 5: Solve for x
    x = 409,651,209.54/22,899.25
  6. Step 6: Final answer
    x = 17,889.29

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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.