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Finding the Fourth Proportional to 8,835.51, 13,248.99 and 5,138.73

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Solution

The fourth proportional to 8,835.51, 13,248.99 and 5,138.73 is: 7,705.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,835.51 : 13,248.99 = 5,138.73 : x
  2. Step 2: Convert to fraction form
    8,835.51/13,248.99 = 5,138.73/x
  3. Step 3: Cross multiply
    8,835.51x = 13,248.99 × 5,138.73
  4. Step 4: Simplify right side
    8,835.51x = 68,082,982.38
  5. Step 5: Solve for x
    x = 68,082,982.38/8,835.51
  6. Step 6: Final answer
    x = 7,705.61

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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.