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Finding the Fourth Proportional to 260,935.46, 391,452.36 and 83,394.80

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Solution

The fourth proportional to 260,935.46, 391,452.36 and 83,394.80 is: 125,107.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,935.46 : 391,452.36 = 83,394.80 : x
  2. Step 2: Convert to fraction form
    260,935.46/391,452.36 = 83,394.80/x
  3. Step 3: Cross multiply
    260,935.46x = 391,452.36 × 83,394.80
  4. Step 4: Simplify right side
    260,935.46x = 32,645,091,271.73
  5. Step 5: Solve for x
    x = 32,645,091,271.73/260,935.46
  6. Step 6: Final answer
    x = 125,107.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.