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Finding the Fourth Proportional to 61,470.20, 84,807.87 and 37,278.56

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Solution

The fourth proportional to 61,470.20, 84,807.87 and 37,278.56 is: 51,431.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,470.20 : 84,807.87 = 37,278.56 : x
  2. Step 2: Convert to fraction form
    61,470.20/84,807.87 = 37,278.56/x
  3. Step 3: Cross multiply
    61,470.20x = 84,807.87 × 37,278.56
  4. Step 4: Simplify right side
    61,470.20x = 3,161,515,270.27
  5. Step 5: Solve for x
    x = 3,161,515,270.27/61,470.20
  6. Step 6: Final answer
    x = 51,431.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.