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Finding the Fourth Proportional to 201,719.53, 278,361.92 and 111,058.28

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Solution

The fourth proportional to 201,719.53, 278,361.92 and 111,058.28 is: 153,254.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,719.53 : 278,361.92 = 111,058.28 : x
  2. Step 2: Convert to fraction form
    201,719.53/278,361.92 = 111,058.28/x
  3. Step 3: Cross multiply
    201,719.53x = 278,361.92 × 111,058.28
  4. Step 4: Simplify right side
    201,719.53x = 30,914,394,938.53
  5. Step 5: Solve for x
    x = 30,914,394,938.53/201,719.53
  6. Step 6: Final answer
    x = 153,254.35

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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.