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Finding the Third Proportional to 56,455.50 and 85,161

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Solution

The third proportional to 56,455.50 and 85,161 is: 128,462.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,455.50 : 85,161 = 85,161 : x
  2. Step 2: Convert to fraction form
    56,455.50/85,161 = 85,161/x
  3. Step 3: Cross multiply
    56,455.50x = 85,161 × 85,161
  4. Step 4: Simplify right side
    56,455.50x = 7,252,395,921
  5. Step 5: Solve for x
    x = 7,252,395,921/56,455.50
  6. Step 6: Final answer
    x = 128,462.17

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.