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Finding the Fourth Proportional to 14,865.84, 20,516.13 and 8,152.74

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Solution

The fourth proportional to 14,865.84, 20,516.13 and 8,152.74 is: 11,251.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,865.84 : 20,516.13 = 8,152.74 : x
  2. Step 2: Convert to fraction form
    14,865.84/20,516.13 = 8,152.74/x
  3. Step 3: Cross multiply
    14,865.84x = 20,516.13 × 8,152.74
  4. Step 4: Simplify right side
    14,865.84x = 167,262,673.70
  5. Step 5: Solve for x
    x = 167,262,673.70/14,865.84
  6. Step 6: Final answer
    x = 11,251.48

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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.