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Finding the Fourth Proportional to 268,161.70, 402,390.30 and 163,054.48

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Solution

The fourth proportional to 268,161.70, 402,390.30 and 163,054.48 is: 244,671.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,161.70 : 402,390.30 = 163,054.48 : x
  2. Step 2: Convert to fraction form
    268,161.70/402,390.30 = 163,054.48/x
  3. Step 3: Cross multiply
    268,161.70x = 402,390.30 × 163,054.48
  4. Step 4: Simplify right side
    268,161.70x = 65,611,541,123.54
  5. Step 5: Solve for x
    x = 65,611,541,123.54/268,161.70
  6. Step 6: Final answer
    x = 244,671.56

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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.