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Finding the Fourth Proportional to 5,718.25, 8,586.09 and 5,436.34

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Solution

The fourth proportional to 5,718.25, 8,586.09 and 5,436.34 is: 8,162.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.25 : 8,586.09 = 5,436.34 : x
  2. Step 2: Convert to fraction form
    5,718.25/8,586.09 = 5,436.34/x
  3. Step 3: Cross multiply
    5,718.25x = 8,586.09 × 5,436.34
  4. Step 4: Simplify right side
    5,718.25x = 46,676,922.48
  5. Step 5: Solve for x
    x = 46,676,922.48/5,718.25
  6. Step 6: Final answer
    x = 8,162.79

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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.