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Finding the Fourth Proportional to 57,689.82, 79,605.16 and 33,485.20

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Solution

The fourth proportional to 57,689.82, 79,605.16 and 33,485.20 is: 46,205.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,689.82 : 79,605.16 = 33,485.20 : x
  2. Step 2: Convert to fraction form
    57,689.82/79,605.16 = 33,485.20/x
  3. Step 3: Cross multiply
    57,689.82x = 79,605.16 × 33,485.20
  4. Step 4: Simplify right side
    57,689.82x = 2,665,594,703.63
  5. Step 5: Solve for x
    x = 2,665,594,703.63/57,689.82
  6. Step 6: Final answer
    x = 46,205.63

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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.