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Finding the Fourth Proportional to 8,589.90, 11,856.69 and 5,005.92

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Solution

The fourth proportional to 8,589.90, 11,856.69 and 5,005.92 is: 6,909.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,589.90 : 11,856.69 = 5,005.92 : x
  2. Step 2: Convert to fraction form
    8,589.90/11,856.69 = 5,005.92/x
  3. Step 3: Cross multiply
    8,589.90x = 11,856.69 × 5,005.92
  4. Step 4: Simplify right side
    8,589.90x = 59,353,641.60
  5. Step 5: Solve for x
    x = 59,353,641.60/8,589.90
  6. Step 6: Final answer
    x = 6,909.70

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.