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Finding the Fourth Proportional to 64,431.54, 96,684.97 and 26,988.43

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Solution

The fourth proportional to 64,431.54, 96,684.97 and 26,988.43 is: 40,498.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,431.54 : 96,684.97 = 26,988.43 : x
  2. Step 2: Convert to fraction form
    64,431.54/96,684.97 = 26,988.43/x
  3. Step 3: Cross multiply
    64,431.54x = 96,684.97 × 26,988.43
  4. Step 4: Simplify right side
    64,431.54x = 2,609,375,544.90
  5. Step 5: Solve for x
    x = 2,609,375,544.90/64,431.54
  6. Step 6: Final answer
    x = 40,498.42

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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.