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Finding the Fourth Proportional to 57,620.40, 79,514.28 and 35,264.40

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Solution

The fourth proportional to 57,620.40, 79,514.28 and 35,264.40 is: 48,663.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,620.40 : 79,514.28 = 35,264.40 : x
  2. Step 2: Convert to fraction form
    57,620.40/79,514.28 = 35,264.40/x
  3. Step 3: Cross multiply
    57,620.40x = 79,514.28 × 35,264.40
  4. Step 4: Simplify right side
    57,620.40x = 2,804,023,375.63
  5. Step 5: Solve for x
    x = 2,804,023,375.63/57,620.40
  6. Step 6: Final answer
    x = 48,663.73

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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.