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Finding the Fourth Proportional to 836,993, 1,256,042.46 and 393,795.56

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Solution

The fourth proportional to 836,993, 1,256,042.46 and 393,795.56 is: 590,953.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,993 : 1,256,042.46 = 393,795.56 : x
  2. Step 2: Convert to fraction form
    836,993/1,256,042.46 = 393,795.56/x
  3. Step 3: Cross multiply
    836,993x = 1,256,042.46 × 393,795.56
  4. Step 4: Simplify right side
    836,993x = 494,623,943,919.48
  5. Step 5: Solve for x
    x = 494,623,943,919.48/836,993
  6. Step 6: Final answer
    x = 590,953.50

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Double scale
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Similar ratio
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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.