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Finding the Fourth Proportional to 34,393.91, 51,582.20 and 13,326.71

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Solution

The fourth proportional to 34,393.91, 51,582.20 and 13,326.71 is: 19,986.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,393.91 : 51,582.20 = 13,326.71 : x
  2. Step 2: Convert to fraction form
    34,393.91/51,582.20 = 13,326.71/x
  3. Step 3: Cross multiply
    34,393.91x = 51,582.20 × 13,326.71
  4. Step 4: Simplify right side
    34,393.91x = 687,420,696.02
  5. Step 5: Solve for x
    x = 687,420,696.02/34,393.91
  6. Step 6: Final answer
    x = 19,986.70

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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.