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Finding the Fourth Proportional to 29,693.30, 40,980.21 and 17,118.50

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Solution

The fourth proportional to 29,693.30, 40,980.21 and 17,118.50 is: 23,625.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,693.30 : 40,980.21 = 17,118.50 : x
  2. Step 2: Convert to fraction form
    29,693.30/40,980.21 = 17,118.50/x
  3. Step 3: Cross multiply
    29,693.30x = 40,980.21 × 17,118.50
  4. Step 4: Simplify right side
    29,693.30x = 701,519,724.89
  5. Step 5: Solve for x
    x = 701,519,724.89/29,693.30
  6. Step 6: Final answer
    x = 23,625.52

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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.