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Finding the Fourth Proportional to 189,944.91, 262,125.05 and 105,065.01

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Solution

The fourth proportional to 189,944.91, 262,125.05 and 105,065.01 is: 144,990.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,944.91 : 262,125.05 = 105,065.01 : x
  2. Step 2: Convert to fraction form
    189,944.91/262,125.05 = 105,065.01/x
  3. Step 3: Cross multiply
    189,944.91x = 262,125.05 × 105,065.01
  4. Step 4: Simplify right side
    189,944.91x = 27,540,170,474.18
  5. Step 5: Solve for x
    x = 27,540,170,474.18/189,944.91
  6. Step 6: Final answer
    x = 144,990.31

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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.