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Finding the Fourth Proportional to 189,862.80, 284,837.40 and 110,936.40

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Solution

The fourth proportional to 189,862.80, 284,837.40 and 110,936.40 is: 166,429.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,862.80 : 284,837.40 = 110,936.40 : x
  2. Step 2: Convert to fraction form
    189,862.80/284,837.40 = 110,936.40/x
  3. Step 3: Cross multiply
    189,862.80x = 284,837.40 × 110,936.40
  4. Step 4: Simplify right side
    189,862.80x = 31,598,835,741.36
  5. Step 5: Solve for x
    x = 31,598,835,741.36/189,862.80
  6. Step 6: Final answer
    x = 166,429.84

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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.