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Finding the Fourth Proportional to 251,687.70, 347,332.59 and 136,969.83

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Solution

The fourth proportional to 251,687.70, 347,332.59 and 136,969.83 is: 189,020.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,687.70 : 347,332.59 = 136,969.83 : x
  2. Step 2: Convert to fraction form
    251,687.70/347,332.59 = 136,969.83/x
  3. Step 3: Cross multiply
    251,687.70x = 347,332.59 × 136,969.83
  4. Step 4: Simplify right side
    251,687.70x = 47,574,085,805.76
  5. Step 5: Solve for x
    x = 47,574,085,805.76/251,687.70
  6. Step 6: Final answer
    x = 189,020.30

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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.