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Finding the Fourth Proportional to 268,563.60, 402,931.80 and 179,917.20

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Solution

The fourth proportional to 268,563.60, 402,931.80 and 179,917.20 is: 269,933.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,563.60 : 402,931.80 = 179,917.20 : x
  2. Step 2: Convert to fraction form
    268,563.60/402,931.80 = 179,917.20/x
  3. Step 3: Cross multiply
    268,563.60x = 402,931.80 × 179,917.20
  4. Step 4: Simplify right side
    268,563.60x = 72,494,361,246.96
  5. Step 5: Solve for x
    x = 72,494,361,246.96/268,563.60
  6. Step 6: Final answer
    x = 269,933.68

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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.