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Finding the Fourth Proportional to 18,902.31, 26,085.29 and 10,946.49

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Solution

The fourth proportional to 18,902.31, 26,085.29 and 10,946.49 is: 15,106.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,902.31 : 26,085.29 = 10,946.49 : x
  2. Step 2: Convert to fraction form
    18,902.31/26,085.29 = 10,946.49/x
  3. Step 3: Cross multiply
    18,902.31x = 26,085.29 × 10,946.49
  4. Step 4: Simplify right side
    18,902.31x = 285,542,311.40
  5. Step 5: Solve for x
    x = 285,542,311.40/18,902.31
  6. Step 6: Final answer
    x = 15,106.21

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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.