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Finding the Fourth Proportional to 111,289.96, 153,583.14 and 60,991.08

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Solution

The fourth proportional to 111,289.96, 153,583.14 and 60,991.08 is: 84,169.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,289.96 : 153,583.14 = 60,991.08 : x
  2. Step 2: Convert to fraction form
    111,289.96/153,583.14 = 60,991.08/x
  3. Step 3: Cross multiply
    111,289.96x = 153,583.14 × 60,991.08
  4. Step 4: Simplify right side
    111,289.96x = 9,367,201,578.39
  5. Step 5: Solve for x
    x = 9,367,201,578.39/111,289.96
  6. Step 6: Final answer
    x = 84,169.33

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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.