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Finding the Fourth Proportional to 16,957.88, 25,413.78 and 7,702.20

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Solution

The fourth proportional to 16,957.88, 25,413.78 and 7,702.20 is: 11,542.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,957.88 : 25,413.78 = 7,702.20 : x
  2. Step 2: Convert to fraction form
    16,957.88/25,413.78 = 7,702.20/x
  3. Step 3: Cross multiply
    16,957.88x = 25,413.78 × 7,702.20
  4. Step 4: Simplify right side
    16,957.88x = 195,742,016.32
  5. Step 5: Solve for x
    x = 195,742,016.32/16,957.88
  6. Step 6: Final answer
    x = 11,542.84

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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.