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Finding the Fourth Proportional to 111,893.28, 154,416.80 and 60,903.54

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Solution

The fourth proportional to 111,893.28, 154,416.80 and 60,903.54 is: 84,049.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,893.28 : 154,416.80 = 60,903.54 : x
  2. Step 2: Convert to fraction form
    111,893.28/154,416.80 = 60,903.54/x
  3. Step 3: Cross multiply
    111,893.28x = 154,416.80 × 60,903.54
  4. Step 4: Simplify right side
    111,893.28x = 9,404,529,755.47
  5. Step 5: Solve for x
    x = 9,404,529,755.47/111,893.28
  6. Step 6: Final answer
    x = 84,049.10

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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.