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Finding the Fourth Proportional to 9,898.92, 13,657.64 and 5,919.26

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Solution

The fourth proportional to 9,898.92, 13,657.64 and 5,919.26 is: 8,166.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,898.92 : 13,657.64 = 5,919.26 : x
  2. Step 2: Convert to fraction form
    9,898.92/13,657.64 = 5,919.26/x
  3. Step 3: Cross multiply
    9,898.92x = 13,657.64 × 5,919.26
  4. Step 4: Simplify right side
    9,898.92x = 80,843,117.73
  5. Step 5: Solve for x
    x = 80,843,117.73/9,898.92
  6. Step 6: Final answer
    x = 8,166.86

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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.