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Finding the Fourth Proportional to 251,619, 347,239.62 and 138,441.96

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Solution

The fourth proportional to 251,619, 347,239.62 and 138,441.96 is: 191,052.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,619 : 347,239.62 = 138,441.96 : x
  2. Step 2: Convert to fraction form
    251,619/347,239.62 = 138,441.96/x
  3. Step 3: Cross multiply
    251,619x = 347,239.62 × 138,441.96
  4. Step 4: Simplify right side
    251,619x = 48,072,533,582.46
  5. Step 5: Solve for x
    x = 48,072,533,582.46/251,619
  6. Step 6: Final answer
    x = 191,052.88

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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.