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Finding the Fourth Proportional to 17,808.72, 26,705.79 and 7,941.25

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Solution

The fourth proportional to 17,808.72, 26,705.79 and 7,941.25 is: 11,908.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,808.72 : 26,705.79 = 7,941.25 : x
  2. Step 2: Convert to fraction form
    17,808.72/26,705.79 = 7,941.25/x
  3. Step 3: Cross multiply
    17,808.72x = 26,705.79 × 7,941.25
  4. Step 4: Simplify right side
    17,808.72x = 212,077,354.84
  5. Step 5: Solve for x
    x = 212,077,354.84/17,808.72
  6. Step 6: Final answer
    x = 11,908.62

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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.