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Finding the Third Proportional to 74,520 and 99,576

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Solution

The third proportional to 74,520 and 99,576 is: 133,056.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,520 : 99,576 = 99,576 : x
  2. Step 2: Convert to fraction form
    74,520/99,576 = 99,576/x
  3. Step 3: Cross multiply
    74,520x = 99,576 × 99,576
  4. Step 4: Simplify right side
    74,520x = 9,915,379,776
  5. Step 5: Solve for x
    x = 9,915,379,776/74,520
  6. Step 6: Final answer
    x = 133,056.63

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.