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Finding the Fourth Proportional to 65,769.66, 90,740.60 and 40,249.41

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Solution

The fourth proportional to 65,769.66, 90,740.60 and 40,249.41 is: 55,531.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,769.66 : 90,740.60 = 40,249.41 : x
  2. Step 2: Convert to fraction form
    65,769.66/90,740.60 = 40,249.41/x
  3. Step 3: Cross multiply
    65,769.66x = 90,740.60 × 40,249.41
  4. Step 4: Simplify right side
    65,769.66x = 3,652,255,613.05
  5. Step 5: Solve for x
    x = 3,652,255,613.05/65,769.66
  6. Step 6: Final answer
    x = 55,531.01

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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.