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Finding the Fourth Proportional to 459,954.80, 689,932.20 and 194,015.60

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Solution

The fourth proportional to 459,954.80, 689,932.20 and 194,015.60 is: 291,023.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,954.80 : 689,932.20 = 194,015.60 : x
  2. Step 2: Convert to fraction form
    459,954.80/689,932.20 = 194,015.60/x
  3. Step 3: Cross multiply
    459,954.80x = 689,932.20 × 194,015.60
  4. Step 4: Simplify right side
    459,954.80x = 133,857,609,742.32
  5. Step 5: Solve for x
    x = 133,857,609,742.32/459,954.80
  6. Step 6: Final answer
    x = 291,023.40

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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.