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Finding the Third Proportional to 668,979 and 953,640.75

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Solution

The third proportional to 668,979 and 953,640.75 is: 1,359,430.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,979 : 953,640.75 = 953,640.75 : x
  2. Step 2: Convert to fraction form
    668,979/953,640.75 = 953,640.75/x
  3. Step 3: Cross multiply
    668,979x = 953,640.75 × 953,640.75
  4. Step 4: Simplify right side
    668,979x = 909,430,680,060.56
  5. Step 5: Solve for x
    x = 909,430,680,060.56/668,979
  6. Step 6: Final answer
    x = 1,359,430.83

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.