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Finding the Third Proportional to 668,190 and 1,439,778

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Solution

The third proportional to 668,190 and 1,439,778 is: 3,102,352.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,190 : 1,439,778 = 1,439,778 : x
  2. Step 2: Convert to fraction form
    668,190/1,439,778 = 1,439,778/x
  3. Step 3: Cross multiply
    668,190x = 1,439,778 × 1,439,778
  4. Step 4: Simplify right side
    668,190x = 2,072,960,689,284
  5. Step 5: Solve for x
    x = 2,072,960,689,284/668,190
  6. Step 6: Final answer
    x = 3,102,352.16

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.