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Finding the Fourth Proportional to 66,916.13, 100,388.77 and 25,363.13

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Solution

The fourth proportional to 66,916.13, 100,388.77 and 25,363.13 is: 38,050.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,916.13 : 100,388.77 = 25,363.13 : x
  2. Step 2: Convert to fraction form
    66,916.13/100,388.77 = 25,363.13/x
  3. Step 3: Cross multiply
    66,916.13x = 100,388.77 × 25,363.13
  4. Step 4: Simplify right side
    66,916.13x = 2,546,172,858.70
  5. Step 5: Solve for x
    x = 2,546,172,858.70/66,916.13
  6. Step 6: Final answer
    x = 38,050.21

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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.