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Finding the Fourth Proportional to 20,699.76, 31,054.22 and 7,552.08

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Solution

The fourth proportional to 20,699.76, 31,054.22 and 7,552.08 is: 11,329.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.76 : 31,054.22 = 7,552.08 : x
  2. Step 2: Convert to fraction form
    20,699.76/31,054.22 = 7,552.08/x
  3. Step 3: Cross multiply
    20,699.76x = 31,054.22 × 7,552.08
  4. Step 4: Simplify right side
    20,699.76x = 234,523,944.34
  5. Step 5: Solve for x
    x = 234,523,944.34/20,699.76
  6. Step 6: Final answer
    x = 11,329.79

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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.