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Finding the Fourth Proportional to 17,978.66, 26,975.77 and 9,648.94

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Solution

The fourth proportional to 17,978.66, 26,975.77 and 9,648.94 is: 14,477.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,978.66 : 26,975.77 = 9,648.94 : x
  2. Step 2: Convert to fraction form
    17,978.66/26,975.77 = 9,648.94/x
  3. Step 3: Cross multiply
    17,978.66x = 26,975.77 × 9,648.94
  4. Step 4: Simplify right side
    17,978.66x = 260,287,622.46
  5. Step 5: Solve for x
    x = 260,287,622.46/17,978.66
  6. Step 6: Final answer
    x = 14,477.59

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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.