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Finding the Fourth Proportional to 631,181.86, 946,772.94 and 157,867.28

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Solution

The fourth proportional to 631,181.86, 946,772.94 and 157,867.28 is: 236,800.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,181.86 : 946,772.94 = 157,867.28 : x
  2. Step 2: Convert to fraction form
    631,181.86/946,772.94 = 157,867.28/x
  3. Step 3: Cross multiply
    631,181.86x = 946,772.94 × 157,867.28
  4. Step 4: Simplify right side
    631,181.86x = 149,464,468,815.40
  5. Step 5: Solve for x
    x = 149,464,468,815.40/631,181.86
  6. Step 6: Final answer
    x = 236,800.96

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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.