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Finding the Fourth Proportional to 71,590.44, 107,389.37 and 18,282.92

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Solution

The fourth proportional to 71,590.44, 107,389.37 and 18,282.92 is: 27,425.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,590.44 : 107,389.37 = 18,282.92 : x
  2. Step 2: Convert to fraction form
    71,590.44/107,389.37 = 18,282.92/x
  3. Step 3: Cross multiply
    71,590.44x = 107,389.37 × 18,282.92
  4. Step 4: Simplify right side
    71,590.44x = 1,963,390,632.20
  5. Step 5: Solve for x
    x = 1,963,390,632.20/71,590.44
  6. Step 6: Final answer
    x = 27,425.32

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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.