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Finding the Third Proportional to 782,721 and 1,699,285.50

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Solution

The third proportional to 782,721 and 1,699,285.50 is: 3,689,144.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,721 : 1,699,285.50 = 1,699,285.50 : x
  2. Step 2: Convert to fraction form
    782,721/1,699,285.50 = 1,699,285.50/x
  3. Step 3: Cross multiply
    782,721x = 1,699,285.50 × 1,699,285.50
  4. Step 4: Simplify right side
    782,721x = 2,887,571,210,510.25
  5. Step 5: Solve for x
    x = 2,887,571,210,510.25/782,721
  6. Step 6: Final answer
    x = 3,689,144.93

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.