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Finding the Fourth Proportional to 189,504.68, 261,486.73 and 108,917.15

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Solution

The fourth proportional to 189,504.68, 261,486.73 and 108,917.15 is: 150,288.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,504.68 : 261,486.73 = 108,917.15 : x
  2. Step 2: Convert to fraction form
    189,504.68/261,486.73 = 108,917.15/x
  3. Step 3: Cross multiply
    189,504.68x = 261,486.73 × 108,917.15
  4. Step 4: Simplify right side
    189,504.68x = 28,480,387,814.69
  5. Step 5: Solve for x
    x = 28,480,387,814.69/189,504.68
  6. Step 6: Final answer
    x = 150,288.57

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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.