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Finding the Third Proportional to 619,487.50 and 872,387

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Solution

The third proportional to 619,487.50 and 872,387 is: 1,228,530.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,487.50 : 872,387 = 872,387 : x
  2. Step 2: Convert to fraction form
    619,487.50/872,387 = 872,387/x
  3. Step 3: Cross multiply
    619,487.50x = 872,387 × 872,387
  4. Step 4: Simplify right side
    619,487.50x = 761,059,077,769
  5. Step 5: Solve for x
    x = 761,059,077,769/619,487.50
  6. Step 6: Final answer
    x = 1,228,530.16

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.