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Finding the Fourth Proportional to 28,166.28, 38,824.02 and 19,088.61

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Solution

The fourth proportional to 28,166.28, 38,824.02 and 19,088.61 is: 26,311.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,166.28 : 38,824.02 = 19,088.61 : x
  2. Step 2: Convert to fraction form
    28,166.28/38,824.02 = 19,088.61/x
  3. Step 3: Cross multiply
    28,166.28x = 38,824.02 × 19,088.61
  4. Step 4: Simplify right side
    28,166.28x = 741,096,576.41
  5. Step 5: Solve for x
    x = 741,096,576.41/28,166.28
  6. Step 6: Final answer
    x = 26,311.48

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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.