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Finding the Fourth Proportional to 418,367.89, 577,347.75 and 227,381.27

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Solution

The fourth proportional to 418,367.89, 577,347.75 and 227,381.27 is: 313,786.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,367.89 : 577,347.75 = 227,381.27 : x
  2. Step 2: Convert to fraction form
    418,367.89/577,347.75 = 227,381.27/x
  3. Step 3: Cross multiply
    418,367.89x = 577,347.75 × 227,381.27
  4. Step 4: Simplify right side
    418,367.89x = 131,278,064,626.64
  5. Step 5: Solve for x
    x = 131,278,064,626.64/418,367.89
  6. Step 6: Final answer
    x = 313,786.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.