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Finding the Fourth Proportional to 16,866.70, 25,300.05 and 10,961.80

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Solution

The fourth proportional to 16,866.70, 25,300.05 and 10,961.80 is: 16,442.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,866.70 : 25,300.05 = 10,961.80 : x
  2. Step 2: Convert to fraction form
    16,866.70/25,300.05 = 10,961.80/x
  3. Step 3: Cross multiply
    16,866.70x = 25,300.05 × 10,961.80
  4. Step 4: Simplify right side
    16,866.70x = 277,334,088.09
  5. Step 5: Solve for x
    x = 277,334,088.09/16,866.70
  6. Step 6: Final answer
    x = 16,442.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.