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Finding the Fourth Proportional to 452,857.40, 679,286.10 and 256,249.40

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Solution

The fourth proportional to 452,857.40, 679,286.10 and 256,249.40 is: 384,374.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,857.40 : 679,286.10 = 256,249.40 : x
  2. Step 2: Convert to fraction form
    452,857.40/679,286.10 = 256,249.40/x
  3. Step 3: Cross multiply
    452,857.40x = 679,286.10 × 256,249.40
  4. Step 4: Simplify right side
    452,857.40x = 174,066,655,553.34
  5. Step 5: Solve for x
    x = 174,066,655,553.34/452,857.40
  6. Step 6: Final answer
    x = 384,374.10

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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.