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Finding the Fourth Proportional to 453,714.20, 680,571.30 and 121,290.20

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Solution

The fourth proportional to 453,714.20, 680,571.30 and 121,290.20 is: 181,935.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,714.20 : 680,571.30 = 121,290.20 : x
  2. Step 2: Convert to fraction form
    453,714.20/680,571.30 = 121,290.20/x
  3. Step 3: Cross multiply
    453,714.20x = 680,571.30 × 121,290.20
  4. Step 4: Simplify right side
    453,714.20x = 82,546,629,091.26
  5. Step 5: Solve for x
    x = 82,546,629,091.26/453,714.20
  6. Step 6: Final answer
    x = 181,935.30

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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.