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Finding the Fourth Proportional to 260,671.91, 391,014.71 and 83,178.73

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Solution

The fourth proportional to 260,671.91, 391,014.71 and 83,178.73 is: 124,770.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,671.91 : 391,014.71 = 83,178.73 : x
  2. Step 2: Convert to fraction form
    260,671.91/391,014.71 = 83,178.73/x
  3. Step 3: Cross multiply
    260,671.91x = 391,014.71 × 83,178.73
  4. Step 4: Simplify right side
    260,671.91x = 32,524,107,373.91
  5. Step 5: Solve for x
    x = 32,524,107,373.91/260,671.91
  6. Step 6: Final answer
    x = 124,770.28

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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.