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Finding the Third Proportional to 672,220 and 1,041,380

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Solution

The third proportional to 672,220 and 1,041,380 is: 1,613,269.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,220 : 1,041,380 = 1,041,380 : x
  2. Step 2: Convert to fraction form
    672,220/1,041,380 = 1,041,380/x
  3. Step 3: Cross multiply
    672,220x = 1,041,380 × 1,041,380
  4. Step 4: Simplify right side
    672,220x = 1,084,472,304,400
  5. Step 5: Solve for x
    x = 1,084,472,304,400/672,220
  6. Step 6: Final answer
    x = 1,613,269.92

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