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Finding the Fourth Proportional to 37,479.69, 51,723.87 and 21,347.31

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Solution

The fourth proportional to 37,479.69, 51,723.87 and 21,347.31 is: 29,460.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,479.69 : 51,723.87 = 21,347.31 : x
  2. Step 2: Convert to fraction form
    37,479.69/51,723.87 = 21,347.31/x
  3. Step 3: Cross multiply
    37,479.69x = 51,723.87 × 21,347.31
  4. Step 4: Simplify right side
    37,479.69x = 1,104,165,487.29
  5. Step 5: Solve for x
    x = 1,104,165,487.29/37,479.69
  6. Step 6: Final answer
    x = 29,460.37

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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.