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Finding the Fourth Proportional to 57,872.40, 79,863.48 and 32,722.80

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Solution

The fourth proportional to 57,872.40, 79,863.48 and 32,722.80 is: 45,157.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,872.40 : 79,863.48 = 32,722.80 : x
  2. Step 2: Convert to fraction form
    57,872.40/79,863.48 = 32,722.80/x
  3. Step 3: Cross multiply
    57,872.40x = 79,863.48 × 32,722.80
  4. Step 4: Simplify right side
    57,872.40x = 2,613,356,683.34
  5. Step 5: Solve for x
    x = 2,613,356,683.34/57,872.40
  6. Step 6: Final answer
    x = 45,157.22

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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.