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Finding the Fourth Proportional to 96,994.96, 145,336.92 and 87,663.76

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Solution

The fourth proportional to 96,994.96, 145,336.92 and 87,663.76 is: 131,355.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,994.96 : 145,336.92 = 87,663.76 : x
  2. Step 2: Convert to fraction form
    96,994.96/145,336.92 = 87,663.76/x
  3. Step 3: Cross multiply
    96,994.96x = 145,336.92 × 87,663.76
  4. Step 4: Simplify right side
    96,994.96x = 12,740,780,874.02
  5. Step 5: Solve for x
    x = 12,740,780,874.02/96,994.96
  6. Step 6: Final answer
    x = 131,355.08

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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.