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Finding the Fourth Proportional to 99,134.15, 136,801.44 and 53,811.17

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Solution

The fourth proportional to 99,134.15, 136,801.44 and 53,811.17 is: 74,257.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,134.15 : 136,801.44 = 53,811.17 : x
  2. Step 2: Convert to fraction form
    99,134.15/136,801.44 = 53,811.17/x
  3. Step 3: Cross multiply
    99,134.15x = 136,801.44 × 53,811.17
  4. Step 4: Simplify right side
    99,134.15x = 7,361,445,373.08
  5. Step 5: Solve for x
    x = 7,361,445,373.08/99,134.15
  6. Step 6: Final answer
    x = 74,257.42

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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.