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Finding the Third Proportional to 619,355 and 872,157

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Solution

The third proportional to 619,355 and 872,157 is: 1,228,145.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,355 : 872,157 = 872,157 : x
  2. Step 2: Convert to fraction form
    619,355/872,157 = 872,157/x
  3. Step 3: Cross multiply
    619,355x = 872,157 × 872,157
  4. Step 4: Simplify right side
    619,355x = 760,657,832,649
  5. Step 5: Solve for x
    x = 760,657,832,649/619,355
  6. Step 6: Final answer
    x = 1,228,145.14

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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.