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Finding the Fourth Proportional to 311,181.33, 429,431.99 and 177,045.33

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Solution

The fourth proportional to 311,181.33, 429,431.99 and 177,045.33 is: 244,323.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,181.33 : 429,431.99 = 177,045.33 : x
  2. Step 2: Convert to fraction form
    311,181.33/429,431.99 = 177,045.33/x
  3. Step 3: Cross multiply
    311,181.33x = 429,431.99 × 177,045.33
  4. Step 4: Simplify right side
    311,181.33x = 76,028,927,496.88
  5. Step 5: Solve for x
    x = 76,028,927,496.88/311,181.33
  6. Step 6: Final answer
    x = 244,323.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.