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Finding the Fourth Proportional to 218,415.60, 327,634.20 and 113,439.60

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Solution

The fourth proportional to 218,415.60, 327,634.20 and 113,439.60 is: 170,165.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,415.60 : 327,634.20 = 113,439.60 : x
  2. Step 2: Convert to fraction form
    218,415.60/327,634.20 = 113,439.60/x
  3. Step 3: Cross multiply
    218,415.60x = 327,634.20 × 113,439.60
  4. Step 4: Simplify right side
    218,415.60x = 37,166,692,594.32
  5. Step 5: Solve for x
    x = 37,166,692,594.32/218,415.60
  6. Step 6: Final answer
    x = 170,165.01

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1.5x scale

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.