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Finding the Fourth Proportional to 18,859.80, 26,207.01 and 18,654.77

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Solution

The fourth proportional to 18,859.80, 26,207.01 and 18,654.77 is: 25,922.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,859.80 : 26,207.01 = 18,654.77 : x
  2. Step 2: Convert to fraction form
    18,859.80/26,207.01 = 18,654.77/x
  3. Step 3: Cross multiply
    18,859.80x = 26,207.01 × 18,654.77
  4. Step 4: Simplify right side
    18,859.80x = 488,885,809.46
  5. Step 5: Solve for x
    x = 488,885,809.46/18,859.80
  6. Step 6: Final answer
    x = 25,922.10

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.