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Finding the Fourth Proportional to 251,068.86, 376,643.79 and 82,540.26

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Solution

The fourth proportional to 251,068.86, 376,643.79 and 82,540.26 is: 123,823.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,068.86 : 376,643.79 = 82,540.26 : x
  2. Step 2: Convert to fraction form
    251,068.86/376,643.79 = 82,540.26/x
  3. Step 3: Cross multiply
    251,068.86x = 376,643.79 × 82,540.26
  4. Step 4: Simplify right side
    251,068.86x = 31,088,276,353.99
  5. Step 5: Solve for x
    x = 31,088,276,353.99/251,068.86
  6. Step 6: Final answer
    x = 123,823.70

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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.