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Finding the Fourth Proportional to 479,990.86, 662,380.66 and 262,196.95

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Solution

The fourth proportional to 479,990.86, 662,380.66 and 262,196.95 is: 361,828.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,990.86 : 662,380.66 = 262,196.95 : x
  2. Step 2: Convert to fraction form
    479,990.86/662,380.66 = 262,196.95/x
  3. Step 3: Cross multiply
    479,990.86x = 662,380.66 × 262,196.95
  4. Step 4: Simplify right side
    479,990.86x = 173,674,188,790.99
  5. Step 5: Solve for x
    x = 173,674,188,790.99/479,990.86
  6. Step 6: Final answer
    x = 361,828.12

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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.