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Finding the Fourth Proportional to 361,981.66, 499,525.14 and 198,637.66

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Solution

The fourth proportional to 361,981.66, 499,525.14 and 198,637.66 is: 274,114.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,981.66 : 499,525.14 = 198,637.66 : x
  2. Step 2: Convert to fraction form
    361,981.66/499,525.14 = 198,637.66/x
  3. Step 3: Cross multiply
    361,981.66x = 499,525.14 × 198,637.66
  4. Step 4: Simplify right side
    361,981.66x = 99,224,504,920.77
  5. Step 5: Solve for x
    x = 99,224,504,920.77/361,981.66
  6. Step 6: Final answer
    x = 274,114.73

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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.