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Finding the Fourth Proportional to 15,982.99, 22,056.51 and 8,813.02

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Solution

The fourth proportional to 15,982.99, 22,056.51 and 8,813.02 is: 12,161.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,982.99 : 22,056.51 = 8,813.02 : x
  2. Step 2: Convert to fraction form
    15,982.99/22,056.51 = 8,813.02/x
  3. Step 3: Cross multiply
    15,982.99x = 22,056.51 × 8,813.02
  4. Step 4: Simplify right side
    15,982.99x = 194,384,463.76
  5. Step 5: Solve for x
    x = 194,384,463.76/15,982.99
  6. Step 6: Final answer
    x = 12,161.96

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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.