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Finding the Fourth Proportional to 88,636.40, 132,630.60 and 65,308.40

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Solution

The fourth proportional to 88,636.40, 132,630.60 and 65,308.40 is: 97,723.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,636.40 : 132,630.60 = 65,308.40 : x
  2. Step 2: Convert to fraction form
    88,636.40/132,630.60 = 65,308.40/x
  3. Step 3: Cross multiply
    88,636.40x = 132,630.60 × 65,308.40
  4. Step 4: Simplify right side
    88,636.40x = 8,661,892,277.04
  5. Step 5: Solve for x
    x = 8,661,892,277.04/88,636.40
  6. Step 6: Final answer
    x = 97,723.87

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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.