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Finding the Fourth Proportional to 74,601.22, 111,905.55 and 21,301.11

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Solution

The fourth proportional to 74,601.22, 111,905.55 and 21,301.11 is: 31,952.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,601.22 : 111,905.55 = 21,301.11 : x
  2. Step 2: Convert to fraction form
    74,601.22/111,905.55 = 21,301.11/x
  3. Step 3: Cross multiply
    74,601.22x = 111,905.55 × 21,301.11
  4. Step 4: Simplify right side
    74,601.22x = 2,383,712,115.43
  5. Step 5: Solve for x
    x = 2,383,712,115.43/74,601.22
  6. Step 6: Final answer
    x = 31,952.72

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Similar ratio
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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.