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Finding the Fourth Proportional to 17,720.70, 26,582.01 and 6,630.30

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Solution

The fourth proportional to 17,720.70, 26,582.01 and 6,630.30 is: 9,945.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,720.70 : 26,582.01 = 6,630.30 : x
  2. Step 2: Convert to fraction form
    17,720.70/26,582.01 = 6,630.30/x
  3. Step 3: Cross multiply
    17,720.70x = 26,582.01 × 6,630.30
  4. Step 4: Simplify right side
    17,720.70x = 176,246,700.90
  5. Step 5: Solve for x
    x = 176,246,700.90/17,720.70
  6. Step 6: Final answer
    x = 9,945.81

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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.