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Finding the Fourth Proportional to 25,473.54, 38,139.46 and 12,966.63

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Solution

The fourth proportional to 25,473.54, 38,139.46 and 12,966.63 is: 19,413.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,473.54 : 38,139.46 = 12,966.63 : x
  2. Step 2: Convert to fraction form
    25,473.54/38,139.46 = 12,966.63/x
  3. Step 3: Cross multiply
    25,473.54x = 38,139.46 × 12,966.63
  4. Step 4: Simplify right side
    25,473.54x = 494,540,305.31
  5. Step 5: Solve for x
    x = 494,540,305.31/25,473.54
  6. Step 6: Final answer
    x = 19,413.88

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1.5x scale

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.