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Finding the Fourth Proportional to 111,906.92, 154,404.95 and 63,498.08

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Solution

The fourth proportional to 111,906.92, 154,404.95 and 63,498.08 is: 87,612.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,906.92 : 154,404.95 = 63,498.08 : x
  2. Step 2: Convert to fraction form
    111,906.92/154,404.95 = 63,498.08/x
  3. Step 3: Cross multiply
    111,906.92x = 154,404.95 × 63,498.08
  4. Step 4: Simplify right side
    111,906.92x = 9,804,416,777.98
  5. Step 5: Solve for x
    x = 9,804,416,777.98/111,906.92
  6. Step 6: Final answer
    x = 87,612.25

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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.