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Finding the Fourth Proportional to 16,059.40, 22,161.78 and 8,985.88

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Solution

The fourth proportional to 16,059.40, 22,161.78 and 8,985.88 is: 12,400.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,059.40 : 22,161.78 = 8,985.88 : x
  2. Step 2: Convert to fraction form
    16,059.40/22,161.78 = 8,985.88/x
  3. Step 3: Cross multiply
    16,059.40x = 22,161.78 × 8,985.88
  4. Step 4: Simplify right side
    16,059.40x = 199,143,095.67
  5. Step 5: Solve for x
    x = 199,143,095.67/16,059.40
  6. Step 6: Final answer
    x = 12,400.41

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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.