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Finding the Fourth Proportional to 16,658.71, 24,987.64 and 5,413.99

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Solution

The fourth proportional to 16,658.71, 24,987.64 and 5,413.99 is: 8,120.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,658.71 : 24,987.64 = 5,413.99 : x
  2. Step 2: Convert to fraction form
    16,658.71/24,987.64 = 5,413.99/x
  3. Step 3: Cross multiply
    16,658.71x = 24,987.64 × 5,413.99
  4. Step 4: Simplify right side
    16,658.71x = 135,282,814.08
  5. Step 5: Solve for x
    x = 135,282,814.08/16,658.71
  6. Step 6: Final answer
    x = 8,120.84

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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.