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Finding the Fourth Proportional to 15,076.68, 20,802.49 and 8,701.92

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Solution

The fourth proportional to 15,076.68, 20,802.49 and 8,701.92 is: 12,006.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,076.68 : 20,802.49 = 8,701.92 : x
  2. Step 2: Convert to fraction form
    15,076.68/20,802.49 = 8,701.92/x
  3. Step 3: Cross multiply
    15,076.68x = 20,802.49 × 8,701.92
  4. Step 4: Simplify right side
    15,076.68x = 181,021,582.03
  5. Step 5: Solve for x
    x = 181,021,582.03/15,076.68
  6. Step 6: Final answer
    x = 12,006.73

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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.