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Finding the Third Proportional to 290,765.25 and 424,869.75

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Solution

The third proportional to 290,765.25 and 424,869.75 is: 620,824.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,765.25 : 424,869.75 = 424,869.75 : x
  2. Step 2: Convert to fraction form
    290,765.25/424,869.75 = 424,869.75/x
  3. Step 3: Cross multiply
    290,765.25x = 424,869.75 × 424,869.75
  4. Step 4: Simplify right side
    290,765.25x = 180,514,304,465.06
  5. Step 5: Solve for x
    x = 180,514,304,465.06/290,765.25
  6. Step 6: Final answer
    x = 620,824.89

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These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.