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Finding the Fourth Proportional to 18,902.76, 26,085.88 and 10,519.26

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Solution

The fourth proportional to 18,902.76, 26,085.88 and 10,519.26 is: 14,516.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,902.76 : 26,085.88 = 10,519.26 : x
  2. Step 2: Convert to fraction form
    18,902.76/26,085.88 = 10,519.26/x
  3. Step 3: Cross multiply
    18,902.76x = 26,085.88 × 10,519.26
  4. Step 4: Simplify right side
    18,902.76x = 274,404,154.05
  5. Step 5: Solve for x
    x = 274,404,154.05/18,902.76
  6. Step 6: Final answer
    x = 14,516.62

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Half scale
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Double scale
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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.