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Finding the Fourth Proportional to 42,493.94, 63,694.11 and 17,520.29

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Solution

The fourth proportional to 42,493.94, 63,694.11 and 17,520.29 is: 26,261.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,493.94 : 63,694.11 = 17,520.29 : x
  2. Step 2: Convert to fraction form
    42,493.94/63,694.11 = 17,520.29/x
  3. Step 3: Cross multiply
    42,493.94x = 63,694.11 × 17,520.29
  4. Step 4: Simplify right side
    42,493.94x = 1,115,938,960.02
  5. Step 5: Solve for x
    x = 1,115,938,960.02/42,493.94
  6. Step 6: Final answer
    x = 26,261.13

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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.