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Finding the Fourth Proportional to 448,086.60, 672,129.90 and 336,112.20

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Solution

The fourth proportional to 448,086.60, 672,129.90 and 336,112.20 is: 504,168.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,086.60 : 672,129.90 = 336,112.20 : x
  2. Step 2: Convert to fraction form
    448,086.60/672,129.90 = 336,112.20/x
  3. Step 3: Cross multiply
    448,086.60x = 672,129.90 × 336,112.20
  4. Step 4: Simplify right side
    448,086.60x = 225,911,059,374.78
  5. Step 5: Solve for x
    x = 225,911,059,374.78/448,086.60
  6. Step 6: Final answer
    x = 504,168.30

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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.