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Finding the Fourth Proportional to 218,390.60, 327,587.74 and 60,631.36

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Solution

The fourth proportional to 218,390.60, 327,587.74 and 60,631.36 is: 90,947.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,390.60 : 327,587.74 = 60,631.36 : x
  2. Step 2: Convert to fraction form
    218,390.60/327,587.74 = 60,631.36/x
  3. Step 3: Cross multiply
    218,390.60x = 327,587.74 × 60,631.36
  4. Step 4: Simplify right side
    218,390.60x = 19,862,089,224.98
  5. Step 5: Solve for x
    x = 19,862,089,224.98/218,390.60
  6. Step 6: Final answer
    x = 90,947.55

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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.