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Finding the Fourth Proportional to 119,594.80, 165,036.18 and 71,874.40

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Solution

The fourth proportional to 119,594.80, 165,036.18 and 71,874.40 is: 99,183.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,594.80 : 165,036.18 = 71,874.40 : x
  2. Step 2: Convert to fraction form
    119,594.80/165,036.18 = 71,874.40/x
  3. Step 3: Cross multiply
    119,594.80x = 165,036.18 × 71,874.40
  4. Step 4: Simplify right side
    119,594.80x = 11,861,876,415.79
  5. Step 5: Solve for x
    x = 11,861,876,415.79/119,594.80
  6. Step 6: Final answer
    x = 99,183.88

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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.