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Finding the Third Proportional to 74,080 and 103,704

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Solution

The third proportional to 74,080 and 103,704 is: 145,174.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,080 : 103,704 = 103,704 : x
  2. Step 2: Convert to fraction form
    74,080/103,704 = 103,704/x
  3. Step 3: Cross multiply
    74,080x = 103,704 × 103,704
  4. Step 4: Simplify right side
    74,080x = 10,754,519,616
  5. Step 5: Solve for x
    x = 10,754,519,616/74,080
  6. Step 6: Final answer
    x = 145,174.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.