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Finding the Third Proportional to 190,190 and 407,368

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Solution

The third proportional to 190,190 and 407,368 is: 872,541.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,190 : 407,368 = 407,368 : x
  2. Step 2: Convert to fraction form
    190,190/407,368 = 407,368/x
  3. Step 3: Cross multiply
    190,190x = 407,368 × 407,368
  4. Step 4: Simplify right side
    190,190x = 165,948,687,424
  5. Step 5: Solve for x
    x = 165,948,687,424/190,190
  6. Step 6: Final answer
    x = 872,541.60

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.