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Finding the Fourth Proportional to 111,396.40, 153,727.81 and 60,409.40

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Solution

The fourth proportional to 111,396.40, 153,727.81 and 60,409.40 is: 83,365.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,396.40 : 153,727.81 = 60,409.40 : x
  2. Step 2: Convert to fraction form
    111,396.40/153,727.81 = 60,409.40/x
  3. Step 3: Cross multiply
    111,396.40x = 153,727.81 × 60,409.40
  4. Step 4: Simplify right side
    111,396.40x = 9,286,603,845.75
  5. Step 5: Solve for x
    x = 9,286,603,845.75/111,396.40
  6. Step 6: Final answer
    x = 83,365.39

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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.