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Finding the Fourth Proportional to 57,581.58, 79,420.28 and 38,165.38

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Solution

The fourth proportional to 57,581.58, 79,420.28 and 38,165.38 is: 52,640.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,581.58 : 79,420.28 = 38,165.38 : x
  2. Step 2: Convert to fraction form
    57,581.58/79,420.28 = 38,165.38/x
  3. Step 3: Cross multiply
    57,581.58x = 79,420.28 × 38,165.38
  4. Step 4: Simplify right side
    57,581.58x = 3,031,104,991.21
  5. Step 5: Solve for x
    x = 3,031,104,991.21/57,581.58
  6. Step 6: Final answer
    x = 52,640.19

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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.