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Finding the Fourth Proportional to 55,361.95, 82,918.07 and 25,717.40

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Solution

The fourth proportional to 55,361.95, 82,918.07 and 25,717.40 is: 38,518.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,361.95 : 82,918.07 = 25,717.40 : x
  2. Step 2: Convert to fraction form
    55,361.95/82,918.07 = 25,717.40/x
  3. Step 3: Cross multiply
    55,361.95x = 82,918.07 × 25,717.40
  4. Step 4: Simplify right side
    55,361.95x = 2,132,436,630.24
  5. Step 5: Solve for x
    x = 2,132,436,630.24/55,361.95
  6. Step 6: Final answer
    x = 38,518.09

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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.