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Finding the Fourth Proportional to 99,015.92, 136,410.98 and 81,005.97

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Solution

The fourth proportional to 99,015.92, 136,410.98 and 81,005.97 is: 111,599.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,015.92 : 136,410.98 = 81,005.97 : x
  2. Step 2: Convert to fraction form
    99,015.92/136,410.98 = 81,005.97/x
  3. Step 3: Cross multiply
    99,015.92x = 136,410.98 × 81,005.97
  4. Step 4: Simplify right side
    99,015.92x = 11,050,103,348.52
  5. Step 5: Solve for x
    x = 11,050,103,348.52/99,015.92
  6. Step 6: Final answer
    x = 111,599.27

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1.5x scale

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.