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Finding the Fourth Proportional to 15,980.46, 22,053.99 and 8,906.87

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Solution

The fourth proportional to 15,980.46, 22,053.99 and 8,906.87 is: 12,292.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,980.46 : 22,053.99 = 8,906.87 : x
  2. Step 2: Convert to fraction form
    15,980.46/22,053.99 = 8,906.87/x
  3. Step 3: Cross multiply
    15,980.46x = 22,053.99 × 8,906.87
  4. Step 4: Simplify right side
    15,980.46x = 196,431,911.64
  5. Step 5: Solve for x
    x = 196,431,911.64/15,980.46
  6. Step 6: Final answer
    x = 12,292.01

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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.