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Finding the Third Proportional to 35,430 and 53,057

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Solution

The third proportional to 35,430 and 53,057 is: 79,453.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,430 : 53,057 = 53,057 : x
  2. Step 2: Convert to fraction form
    35,430/53,057 = 53,057/x
  3. Step 3: Cross multiply
    35,430x = 53,057 × 53,057
  4. Step 4: Simplify right side
    35,430x = 2,815,045,249
  5. Step 5: Solve for x
    x = 2,815,045,249/35,430
  6. Step 6: Final answer
    x = 79,453.72

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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.