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Finding the Fourth Proportional to 111,883.20, 167,824.80 and 103,329.60

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Solution

The fourth proportional to 111,883.20, 167,824.80 and 103,329.60 is: 154,994.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,883.20 : 167,824.80 = 103,329.60 : x
  2. Step 2: Convert to fraction form
    111,883.20/167,824.80 = 103,329.60/x
  3. Step 3: Cross multiply
    111,883.20x = 167,824.80 × 103,329.60
  4. Step 4: Simplify right side
    111,883.20x = 17,341,269,454.08
  5. Step 5: Solve for x
    x = 17,341,269,454.08/111,883.20
  6. Step 6: Final answer
    x = 154,994.40

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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.