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Finding the Fourth Proportional to 104,196.96, 143,824.55 and 66,471.21

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Solution

The fourth proportional to 104,196.96, 143,824.55 and 66,471.21 is: 91,751.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,196.96 : 143,824.55 = 66,471.21 : x
  2. Step 2: Convert to fraction form
    104,196.96/143,824.55 = 66,471.21/x
  3. Step 3: Cross multiply
    104,196.96x = 143,824.55 × 66,471.21
  4. Step 4: Simplify right side
    104,196.96x = 9,560,191,533.85
  5. Step 5: Solve for x
    x = 9,560,191,533.85/104,196.96
  6. Step 6: Final answer
    x = 91,751.16

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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.