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Finding the Third Proportional to 454,221 and 705,318.75

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Solution

The third proportional to 454,221 and 705,318.75 is: 1,095,225.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,221 : 705,318.75 = 705,318.75 : x
  2. Step 2: Convert to fraction form
    454,221/705,318.75 = 705,318.75/x
  3. Step 3: Cross multiply
    454,221x = 705,318.75 × 705,318.75
  4. Step 4: Simplify right side
    454,221x = 497,474,539,101.56
  5. Step 5: Solve for x
    x = 497,474,539,101.56/454,221
  6. Step 6: Final answer
    x = 1,095,225.76

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.