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Finding the Third Proportional to 478,907 and 720,371.75

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Solution

The third proportional to 478,907 and 720,371.75 is: 1,083,582.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,907 : 720,371.75 = 720,371.75 : x
  2. Step 2: Convert to fraction form
    478,907/720,371.75 = 720,371.75/x
  3. Step 3: Cross multiply
    478,907x = 720,371.75 × 720,371.75
  4. Step 4: Simplify right side
    478,907x = 518,935,458,198.06
  5. Step 5: Solve for x
    x = 518,935,458,198.06/478,907
  6. Step 6: Final answer
    x = 1,083,582.95

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.