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Finding the Fourth Proportional to 18,946.70, 26,146.63 and 10,880.25

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Solution

The fourth proportional to 18,946.70, 26,146.63 and 10,880.25 is: 15,014.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,946.70 : 26,146.63 = 10,880.25 : x
  2. Step 2: Convert to fraction form
    18,946.70/26,146.63 = 10,880.25/x
  3. Step 3: Cross multiply
    18,946.70x = 26,146.63 × 10,880.25
  4. Step 4: Simplify right side
    18,946.70x = 284,481,872.48
  5. Step 5: Solve for x
    x = 284,481,872.48/18,946.70
  6. Step 6: Final answer
    x = 15,014.85

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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.