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Finding the Fourth Proportional to 22,611.60, 31,201.94 and 12,540.01

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Solution

The fourth proportional to 22,611.60, 31,201.94 and 12,540.01 is: 17,304.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,611.60 : 31,201.94 = 12,540.01 : x
  2. Step 2: Convert to fraction form
    22,611.60/31,201.94 = 12,540.01/x
  3. Step 3: Cross multiply
    22,611.60x = 31,201.94 × 12,540.01
  4. Step 4: Simplify right side
    22,611.60x = 391,272,563.71
  5. Step 5: Solve for x
    x = 391,272,563.71/22,611.60
  6. Step 6: Final answer
    x = 17,304.07

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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.