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Finding the Fourth Proportional to 68,712.90, 96,336.30 and 68,712.90

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Solution

The fourth proportional to 68,712.90, 96,336.30 and 68,712.90 is: 96,336.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,712.90 : 96,336.30 = 68,712.90 : x
  2. Step 2: Convert to fraction form
    68,712.90/96,336.30 = 68,712.90/x
  3. Step 3: Cross multiply
    68,712.90x = 96,336.30 × 68,712.90
  4. Step 4: Simplify right side
    68,712.90x = 6,619,546,548.27
  5. Step 5: Solve for x
    x = 6,619,546,548.27/68,712.90
  6. Step 6: Final answer
    x = 96,336.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.