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Finding the Fourth Proportional to 91,267.60, 136,924.08 and 53,858.56

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Solution

The fourth proportional to 91,267.60, 136,924.08 and 53,858.56 is: 80,801.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,267.60 : 136,924.08 = 53,858.56 : x
  2. Step 2: Convert to fraction form
    91,267.60/136,924.08 = 53,858.56/x
  3. Step 3: Cross multiply
    91,267.60x = 136,924.08 × 53,858.56
  4. Step 4: Simplify right side
    91,267.60x = 7,374,533,778.12
  5. Step 5: Solve for x
    x = 7,374,533,778.12/91,267.60
  6. Step 6: Final answer
    x = 80,801.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.