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Finding the Fourth Proportional to 251,505.99, 347,080.56 and 136,785.72

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Solution

The fourth proportional to 251,505.99, 347,080.56 and 136,785.72 is: 188,765.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,505.99 : 347,080.56 = 136,785.72 : x
  2. Step 2: Convert to fraction form
    251,505.99/347,080.56 = 136,785.72/x
  3. Step 3: Cross multiply
    251,505.99x = 347,080.56 × 136,785.72
  4. Step 4: Simplify right side
    251,505.99x = 47,475,664,297.60
  5. Step 5: Solve for x
    x = 47,475,664,297.60/251,505.99
  6. Step 6: Final answer
    x = 188,765.54

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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.