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Finding the Fourth Proportional to 74,489.22, 102,793.05 and 40,496.22

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Solution

The fourth proportional to 74,489.22, 102,793.05 and 40,496.22 is: 55,883.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,489.22 : 102,793.05 = 40,496.22 : x
  2. Step 2: Convert to fraction form
    74,489.22/102,793.05 = 40,496.22/x
  3. Step 3: Cross multiply
    74,489.22x = 102,793.05 × 40,496.22
  4. Step 4: Simplify right side
    74,489.22x = 4,162,729,967.27
  5. Step 5: Solve for x
    x = 4,162,729,967.27/74,489.22
  6. Step 6: Final answer
    x = 55,883.66

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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.