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Finding the Fourth Proportional to 339,838.15, 509,724.26 and 103,182.88

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Solution

The fourth proportional to 339,838.15, 509,724.26 and 103,182.88 is: 154,764.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,838.15 : 509,724.26 = 103,182.88 : x
  2. Step 2: Convert to fraction form
    339,838.15/509,724.26 = 103,182.88/x
  3. Step 3: Cross multiply
    339,838.15x = 509,724.26 × 103,182.88
  4. Step 4: Simplify right side
    339,838.15x = 52,594,814,088.13
  5. Step 5: Solve for x
    x = 52,594,814,088.13/339,838.15
  6. Step 6: Final answer
    x = 154,764.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.