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Finding the Fourth Proportional to 29,393.69, 40,564.01 and 15,964.79

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Solution

The fourth proportional to 29,393.69, 40,564.01 and 15,964.79 is: 22,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,393.69 : 40,564.01 = 15,964.79 : x
  2. Step 2: Convert to fraction form
    29,393.69/40,564.01 = 15,964.79/x
  3. Step 3: Cross multiply
    29,393.69x = 40,564.01 × 15,964.79
  4. Step 4: Simplify right side
    29,393.69x = 647,595,738.30
  5. Step 5: Solve for x
    x = 647,595,738.30/29,393.69
  6. Step 6: Final answer
    x = 22,031.80

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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.