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Finding the Fourth Proportional to 18,502.79, 27,714.35 and 12,265.79

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Solution

The fourth proportional to 18,502.79, 27,714.35 and 12,265.79 is: 18,372.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,502.79 : 27,714.35 = 12,265.79 : x
  2. Step 2: Convert to fraction form
    18,502.79/27,714.35 = 12,265.79/x
  3. Step 3: Cross multiply
    18,502.79x = 27,714.35 × 12,265.79
  4. Step 4: Simplify right side
    18,502.79x = 339,938,197.19
  5. Step 5: Solve for x
    x = 339,938,197.19/18,502.79
  6. Step 6: Final answer
    x = 18,372.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.