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Finding the Fourth Proportional to 22,656, 33,875.87 and 20,670.90

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Solution

The fourth proportional to 22,656, 33,875.87 and 20,670.90 is: 30,907.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,656 : 33,875.87 = 20,670.90 : x
  2. Step 2: Convert to fraction form
    22,656/33,875.87 = 20,670.90/x
  3. Step 3: Cross multiply
    22,656x = 33,875.87 × 20,670.90
  4. Step 4: Simplify right side
    22,656x = 700,244,617.83
  5. Step 5: Solve for x
    x = 700,244,617.83/22,656
  6. Step 6: Final answer
    x = 30,907.69

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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.