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Finding the Fourth Proportional to 53,170.55, 73,380.53 and 39,718.45

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Solution

The fourth proportional to 53,170.55, 73,380.53 and 39,718.45 is: 54,815.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,170.55 : 73,380.53 = 39,718.45 : x
  2. Step 2: Convert to fraction form
    53,170.55/73,380.53 = 39,718.45/x
  3. Step 3: Cross multiply
    53,170.55x = 73,380.53 × 39,718.45
  4. Step 4: Simplify right side
    53,170.55x = 2,914,560,911.78
  5. Step 5: Solve for x
    x = 2,914,560,911.78/53,170.55
  6. Step 6: Final answer
    x = 54,815.32

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.