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Finding the Fourth Proportional to 13,596.52, 18,767.88 and 8,569.21

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Solution

The fourth proportional to 13,596.52, 18,767.88 and 8,569.21 is: 11,828.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,596.52 : 18,767.88 = 8,569.21 : x
  2. Step 2: Convert to fraction form
    13,596.52/18,767.88 = 8,569.21/x
  3. Step 3: Cross multiply
    13,596.52x = 18,767.88 × 8,569.21
  4. Step 4: Simplify right side
    13,596.52x = 160,825,904.97
  5. Step 5: Solve for x
    x = 160,825,904.97/13,596.52
  6. Step 6: Final answer
    x = 11,828.46

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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.