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Finding the Fourth Proportional to 189,806.96, 261,913.56 and 104,910.32

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Solution

The fourth proportional to 189,806.96, 261,913.56 and 104,910.32 is: 144,765.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,806.96 : 261,913.56 = 104,910.32 : x
  2. Step 2: Convert to fraction form
    189,806.96/261,913.56 = 104,910.32/x
  3. Step 3: Cross multiply
    189,806.96x = 261,913.56 × 104,910.32
  4. Step 4: Simplify right side
    189,806.96x = 27,477,435,391.94
  5. Step 5: Solve for x
    x = 27,477,435,391.94/189,806.96
  6. Step 6: Final answer
    x = 144,765.16

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1.5x scale

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.