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Finding the Fourth Proportional to 99,214.68, 136,917.28 and 53,893.54

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Solution

The fourth proportional to 99,214.68, 136,917.28 and 53,893.54 is: 74,373.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,214.68 : 136,917.28 = 53,893.54 : x
  2. Step 2: Convert to fraction form
    99,214.68/136,917.28 = 53,893.54/x
  3. Step 3: Cross multiply
    99,214.68x = 136,917.28 × 53,893.54
  4. Step 4: Simplify right side
    99,214.68x = 7,378,956,906.37
  5. Step 5: Solve for x
    x = 7,378,956,906.37/99,214.68
  6. Step 6: Final answer
    x = 74,373.64

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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.