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Finding the Fourth Proportional to 251,713.68, 347,358.29 and 136,994.55

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Solution

The fourth proportional to 251,713.68, 347,358.29 and 136,994.55 is: 189,048.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,713.68 : 347,358.29 = 136,994.55 : x
  2. Step 2: Convert to fraction form
    251,713.68/347,358.29 = 136,994.55/x
  3. Step 3: Cross multiply
    251,713.68x = 347,358.29 × 136,994.55
  4. Step 4: Simplify right side
    251,713.68x = 47,586,191,942.35
  5. Step 5: Solve for x
    x = 47,586,191,942.35/251,713.68
  6. Step 6: Final answer
    x = 189,048.89

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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.