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Finding the Fourth Proportional to 97,321.72, 134,188.88 and 68,646.08

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Solution

The fourth proportional to 97,321.72, 134,188.88 and 68,646.08 is: 94,650.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,321.72 : 134,188.88 = 68,646.08 : x
  2. Step 2: Convert to fraction form
    97,321.72/134,188.88 = 68,646.08/x
  3. Step 3: Cross multiply
    97,321.72x = 134,188.88 × 68,646.08
  4. Step 4: Simplify right side
    97,321.72x = 9,211,540,591.59
  5. Step 5: Solve for x
    x = 9,211,540,591.59/97,321.72
  6. Step 6: Final answer
    x = 94,650.41

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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.