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Finding the Fourth Proportional to 57,585.54, 79,437.69 and 39,649.41

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Solution

The fourth proportional to 57,585.54, 79,437.69 and 39,649.41 is: 54,695.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,585.54 : 79,437.69 = 39,649.41 : x
  2. Step 2: Convert to fraction form
    57,585.54/79,437.69 = 39,649.41/x
  3. Step 3: Cross multiply
    57,585.54x = 79,437.69 × 39,649.41
  4. Step 4: Simplify right side
    57,585.54x = 3,149,657,540.26
  5. Step 5: Solve for x
    x = 3,149,657,540.26/57,585.54
  6. Step 6: Final answer
    x = 54,695.29

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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.