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Finding the Third Proportional to 190,516 and 402,416

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Solution

The third proportional to 190,516 and 402,416 is: 850,000.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,516 : 402,416 = 402,416 : x
  2. Step 2: Convert to fraction form
    190,516/402,416 = 402,416/x
  3. Step 3: Cross multiply
    190,516x = 402,416 × 402,416
  4. Step 4: Simplify right side
    190,516x = 161,938,637,056
  5. Step 5: Solve for x
    x = 161,938,637,056/190,516
  6. Step 6: Final answer
    x = 850,000.19

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.