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Finding the Fourth Proportional to 16,959.85, 23,404.87 and 9,406.49

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Solution

The fourth proportional to 16,959.85, 23,404.87 and 9,406.49 is: 12,981.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,959.85 : 23,404.87 = 9,406.49 : x
  2. Step 2: Convert to fraction form
    16,959.85/23,404.87 = 9,406.49/x
  3. Step 3: Cross multiply
    16,959.85x = 23,404.87 × 9,406.49
  4. Step 4: Simplify right side
    16,959.85x = 220,157,675.61
  5. Step 5: Solve for x
    x = 220,157,675.61/16,959.85
  6. Step 6: Final answer
    x = 12,981.11

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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.