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Finding the Fourth Proportional to 636,286.50, 954,429.75 and 193,054.50

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Solution

The fourth proportional to 636,286.50, 954,429.75 and 193,054.50 is: 289,581.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,286.50 : 954,429.75 = 193,054.50 : x
  2. Step 2: Convert to fraction form
    636,286.50/954,429.75 = 193,054.50/x
  3. Step 3: Cross multiply
    636,286.50x = 954,429.75 × 193,054.50
  4. Step 4: Simplify right side
    636,286.50x = 184,256,958,171.38
  5. Step 5: Solve for x
    x = 184,256,958,171.38/636,286.50
  6. Step 6: Final answer
    x = 289,581.75

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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.