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Finding the Fourth Proportional to 22,699.80, 34,050.74 and 7,909.88

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Solution

The fourth proportional to 22,699.80, 34,050.74 and 7,909.88 is: 11,865.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,699.80 : 34,050.74 = 7,909.88 : x
  2. Step 2: Convert to fraction form
    22,699.80/34,050.74 = 7,909.88/x
  3. Step 3: Cross multiply
    22,699.80x = 34,050.74 × 7,909.88
  4. Step 4: Simplify right side
    22,699.80x = 269,337,057.51
  5. Step 5: Solve for x
    x = 269,337,057.51/22,699.80
  6. Step 6: Final answer
    x = 11,865.17

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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.