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Finding the Fourth Proportional to 545,195.40, 817,793.10 and 395,896.20

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Solution

The fourth proportional to 545,195.40, 817,793.10 and 395,896.20 is: 593,844.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,195.40 : 817,793.10 = 395,896.20 : x
  2. Step 2: Convert to fraction form
    545,195.40/817,793.10 = 395,896.20/x
  3. Step 3: Cross multiply
    545,195.40x = 817,793.10 × 395,896.20
  4. Step 4: Simplify right side
    545,195.40x = 323,761,180,676.22
  5. Step 5: Solve for x
    x = 323,761,180,676.22/545,195.40
  6. Step 6: Final answer
    x = 593,844.30

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Half scale
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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.