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Finding the Fourth Proportional to 39,920.58, 59,893.02 and 17,731.98

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Solution

The fourth proportional to 39,920.58, 59,893.02 and 17,731.98 is: 26,603.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,920.58 : 59,893.02 = 17,731.98 : x
  2. Step 2: Convert to fraction form
    39,920.58/59,893.02 = 17,731.98/x
  3. Step 3: Cross multiply
    39,920.58x = 59,893.02 × 17,731.98
  4. Step 4: Simplify right side
    39,920.58x = 1,062,021,832.78
  5. Step 5: Solve for x
    x = 1,062,021,832.78/39,920.58
  6. Step 6: Final answer
    x = 26,603.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.