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Finding the Third Proportional to 28,412.63 and 42,619

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Solution

The third proportional to 28,412.63 and 42,619 is: 63,928.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,412.63 : 42,619 = 42,619 : x
  2. Step 2: Convert to fraction form
    28,412.63/42,619 = 42,619/x
  3. Step 3: Cross multiply
    28,412.63x = 42,619 × 42,619
  4. Step 4: Simplify right side
    28,412.63x = 1,816,379,161
  5. Step 5: Solve for x
    x = 1,816,379,161/28,412.63
  6. Step 6: Final answer
    x = 63,928.59

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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.