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Finding the Fourth Proportional to 159,918.60, 220,683.45 and 88,297.08

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Solution

The fourth proportional to 159,918.60, 220,683.45 and 88,297.08 is: 121,847.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,918.60 : 220,683.45 = 88,297.08 : x
  2. Step 2: Convert to fraction form
    159,918.60/220,683.45 = 88,297.08/x
  3. Step 3: Cross multiply
    159,918.60x = 220,683.45 × 88,297.08
  4. Step 4: Simplify right side
    159,918.60x = 19,485,704,239.33
  5. Step 5: Solve for x
    x = 19,485,704,239.33/159,918.60
  6. Step 6: Final answer
    x = 121,847.64

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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.