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Finding the Fourth Proportional to 692,204.40, 955,446.36 and 405,786.48

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Solution

The fourth proportional to 692,204.40, 955,446.36 and 405,786.48 is: 560,105.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,204.40 : 955,446.36 = 405,786.48 : x
  2. Step 2: Convert to fraction form
    692,204.40/955,446.36 = 405,786.48/x
  3. Step 3: Cross multiply
    692,204.40x = 955,446.36 × 405,786.48
  4. Step 4: Simplify right side
    692,204.40x = 387,707,215,253.21
  5. Step 5: Solve for x
    x = 387,707,215,253.21/692,204.40
  6. Step 6: Final answer
    x = 560,105.10

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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.