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Finding the Fourth Proportional to 47,278.72, 70,910.40 and 22,318.72

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Solution

The fourth proportional to 47,278.72, 70,910.40 and 22,318.72 is: 33,474.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,278.72 : 70,910.40 = 22,318.72 : x
  2. Step 2: Convert to fraction form
    47,278.72/70,910.40 = 22,318.72/x
  3. Step 3: Cross multiply
    47,278.72x = 70,910.40 × 22,318.72
  4. Step 4: Simplify right side
    47,278.72x = 1,582,629,362.69
  5. Step 5: Solve for x
    x = 1,582,629,362.69/47,278.72
  6. Step 6: Final answer
    x = 33,474.45

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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.