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Finding the Fourth Proportional to 17,699.40, 26,565.52 and 8,940.46

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Solution

The fourth proportional to 17,699.40, 26,565.52 and 8,940.46 is: 13,418.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,699.40 : 26,565.52 = 8,940.46 : x
  2. Step 2: Convert to fraction form
    17,699.40/26,565.52 = 8,940.46/x
  3. Step 3: Cross multiply
    17,699.40x = 26,565.52 × 8,940.46
  4. Step 4: Simplify right side
    17,699.40x = 237,507,968.94
  5. Step 5: Solve for x
    x = 237,507,968.94/17,699.40
  6. Step 6: Final answer
    x = 13,418.98

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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.