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Finding the Fourth Proportional to 18,902.99, 26,085.91 and 10,404.92

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Solution

The fourth proportional to 18,902.99, 26,085.91 and 10,404.92 is: 14,358.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,902.99 : 26,085.91 = 10,404.92 : x
  2. Step 2: Convert to fraction form
    18,902.99/26,085.91 = 10,404.92/x
  3. Step 3: Cross multiply
    18,902.99x = 26,085.91 × 10,404.92
  4. Step 4: Simplify right side
    18,902.99x = 271,421,865.39
  5. Step 5: Solve for x
    x = 271,421,865.39/18,902.99
  6. Step 6: Final answer
    x = 14,358.68

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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.