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Finding the Fourth Proportional to 260,879.77, 391,300.53 and 83,339.11

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Solution

The fourth proportional to 260,879.77, 391,300.53 and 83,339.11 is: 125,002.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,879.77 : 391,300.53 = 83,339.11 : x
  2. Step 2: Convert to fraction form
    260,879.77/391,300.53 = 83,339.11/x
  3. Step 3: Cross multiply
    260,879.77x = 391,300.53 × 83,339.11
  4. Step 4: Simplify right side
    260,879.77x = 32,610,637,912.73
  5. Step 5: Solve for x
    x = 32,610,637,912.73/260,879.77
  6. Step 6: Final answer
    x = 125,002.56

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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.