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Finding the Fourth Proportional to 269,781.40, 405,132.90 and 176,699.80

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Solution

The fourth proportional to 269,781.40, 405,132.90 and 176,699.80 is: 265,351.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,781.40 : 405,132.90 = 176,699.80 : x
  2. Step 2: Convert to fraction form
    269,781.40/405,132.90 = 176,699.80/x
  3. Step 3: Cross multiply
    269,781.40x = 405,132.90 × 176,699.80
  4. Step 4: Simplify right side
    269,781.40x = 71,586,902,403.42
  5. Step 5: Solve for x
    x = 71,586,902,403.42/269,781.40
  6. Step 6: Final answer
    x = 265,351.51

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1.5x scale

Why These Related Problems?

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