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Finding the Fourth Proportional to 344,558.20, 515,816.70 and 256,203.40

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Solution

The fourth proportional to 344,558.20, 515,816.70 and 256,203.40 is: 383,546.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,558.20 : 515,816.70 = 256,203.40 : x
  2. Step 2: Convert to fraction form
    344,558.20/515,816.70 = 256,203.40/x
  3. Step 3: Cross multiply
    344,558.20x = 515,816.70 × 256,203.40
  4. Step 4: Simplify right side
    344,558.20x = 132,153,992,316.78
  5. Step 5: Solve for x
    x = 132,153,992,316.78/344,558.20
  6. Step 6: Final answer
    x = 383,546.21

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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.