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Finding the Fourth Proportional to 25,696.35, 38,543.95 and 11,845.35

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Solution

The fourth proportional to 25,696.35, 38,543.95 and 11,845.35 is: 17,767.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,696.35 : 38,543.95 = 11,845.35 : x
  2. Step 2: Convert to fraction form
    25,696.35/38,543.95 = 11,845.35/x
  3. Step 3: Cross multiply
    25,696.35x = 38,543.95 × 11,845.35
  4. Step 4: Simplify right side
    25,696.35x = 456,566,578.13
  5. Step 5: Solve for x
    x = 456,566,578.13/25,696.35
  6. Step 6: Final answer
    x = 17,767.76

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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.