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Finding the Fourth Proportional to 99,027.36, 136,552.08 and 74,884

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Solution

The fourth proportional to 99,027.36, 136,552.08 and 74,884 is: 103,260.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,027.36 : 136,552.08 = 74,884 : x
  2. Step 2: Convert to fraction form
    99,027.36/136,552.08 = 74,884/x
  3. Step 3: Cross multiply
    99,027.36x = 136,552.08 × 74,884
  4. Step 4: Simplify right side
    99,027.36x = 10,225,565,958.72
  5. Step 5: Solve for x
    x = 10,225,565,958.72/99,027.36
  6. Step 6: Final answer
    x = 103,260.01

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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.