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Finding the Third Proportional to 56,828.50 and 85,243

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Solution

The third proportional to 56,828.50 and 85,243 is: 127,864.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,828.50 : 85,243 = 85,243 : x
  2. Step 2: Convert to fraction form
    56,828.50/85,243 = 85,243/x
  3. Step 3: Cross multiply
    56,828.50x = 85,243 × 85,243
  4. Step 4: Simplify right side
    56,828.50x = 7,266,369,049
  5. Step 5: Solve for x
    x = 7,266,369,049/56,828.50
  6. Step 6: Final answer
    x = 127,864.88

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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.