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Finding the Fourth Proportional to 8,364.75, 11,545.16 and 5,008.31

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Solution

The fourth proportional to 8,364.75, 11,545.16 and 5,008.31 is: 6,912.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,364.75 : 11,545.16 = 5,008.31 : x
  2. Step 2: Convert to fraction form
    8,364.75/11,545.16 = 5,008.31/x
  3. Step 3: Cross multiply
    8,364.75x = 11,545.16 × 5,008.31
  4. Step 4: Simplify right side
    8,364.75x = 57,821,740.28
  5. Step 5: Solve for x
    x = 57,821,740.28/8,364.75
  6. Step 6: Final answer
    x = 6,912.55

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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.