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Finding the Fourth Proportional to 278,436.54, 384,187.56 and 169,511.64

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Solution

The fourth proportional to 278,436.54, 384,187.56 and 169,511.64 is: 233,892.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,436.54 : 384,187.56 = 169,511.64 : x
  2. Step 2: Convert to fraction form
    278,436.54/384,187.56 = 169,511.64/x
  3. Step 3: Cross multiply
    278,436.54x = 384,187.56 × 169,511.64
  4. Step 4: Simplify right side
    278,436.54x = 65,124,261,286.83
  5. Step 5: Solve for x
    x = 65,124,261,286.83/278,436.54
  6. Step 6: Final answer
    x = 233,892.66

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1.5x scale

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.