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Finding the Fourth Proportional to 8,413.02, 11,609.79 and 4,876.86

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Solution

The fourth proportional to 8,413.02, 11,609.79 and 4,876.86 is: 6,729.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,413.02 : 11,609.79 = 4,876.86 : x
  2. Step 2: Convert to fraction form
    8,413.02/11,609.79 = 4,876.86/x
  3. Step 3: Cross multiply
    8,413.02x = 11,609.79 × 4,876.86
  4. Step 4: Simplify right side
    8,413.02x = 56,619,320.46
  5. Step 5: Solve for x
    x = 56,619,320.46/8,413.02
  6. Step 6: Final answer
    x = 6,729.96

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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.