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Finding the Fourth Proportional to 28,162.76, 38,863.07 and 16,061.47

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Solution

The fourth proportional to 28,162.76, 38,863.07 and 16,061.47 is: 22,163.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,162.76 : 38,863.07 = 16,061.47 : x
  2. Step 2: Convert to fraction form
    28,162.76/38,863.07 = 16,061.47/x
  3. Step 3: Cross multiply
    28,162.76x = 38,863.07 × 16,061.47
  4. Step 4: Simplify right side
    28,162.76x = 624,197,758.29
  5. Step 5: Solve for x
    x = 624,197,758.29/28,162.76
  6. Step 6: Final answer
    x = 22,163.94

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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.