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Finding the Third Proportional to 619,353 and 872,154

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Solution

The third proportional to 619,353 and 872,154 is: 1,228,140.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,353 : 872,154 = 872,154 : x
  2. Step 2: Convert to fraction form
    619,353/872,154 = 872,154/x
  3. Step 3: Cross multiply
    619,353x = 872,154 × 872,154
  4. Step 4: Simplify right side
    619,353x = 760,652,599,716
  5. Step 5: Solve for x
    x = 760,652,599,716/619,353
  6. Step 6: Final answer
    x = 1,228,140.66

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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.