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Finding the Fourth Proportional to 111,657.60, 167,486.40 and 64,272.60

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Solution

The fourth proportional to 111,657.60, 167,486.40 and 64,272.60 is: 96,408.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,657.60 : 167,486.40 = 64,272.60 : x
  2. Step 2: Convert to fraction form
    111,657.60/167,486.40 = 64,272.60/x
  3. Step 3: Cross multiply
    111,657.60x = 167,486.40 × 64,272.60
  4. Step 4: Simplify right side
    111,657.60x = 10,764,786,392.64
  5. Step 5: Solve for x
    x = 10,764,786,392.64/111,657.60
  6. Step 6: Final answer
    x = 96,408.90

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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.