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Finding the Fourth Proportional to 189,694.82, 261,833.40 and 125,211.12

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Solution

The fourth proportional to 189,694.82, 261,833.40 and 125,211.12 is: 172,827.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,694.82 : 261,833.40 = 125,211.12 : x
  2. Step 2: Convert to fraction form
    189,694.82/261,833.40 = 125,211.12/x
  3. Step 3: Cross multiply
    189,694.82x = 261,833.40 × 125,211.12
  4. Step 4: Simplify right side
    189,694.82x = 32,784,452,641.35
  5. Step 5: Solve for x
    x = 32,784,452,641.35/189,694.82
  6. Step 6: Final answer
    x = 172,827.35

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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.