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Finding the Fourth Proportional to 109,361.70, 164,042.55 and 93,615.30

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Solution

The fourth proportional to 109,361.70, 164,042.55 and 93,615.30 is: 140,422.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,361.70 : 164,042.55 = 93,615.30 : x
  2. Step 2: Convert to fraction form
    109,361.70/164,042.55 = 93,615.30/x
  3. Step 3: Cross multiply
    109,361.70x = 164,042.55 × 93,615.30
  4. Step 4: Simplify right side
    109,361.70x = 15,356,892,531.02
  5. Step 5: Solve for x
    x = 15,356,892,531.02/109,361.70
  6. Step 6: Final answer
    x = 140,422.95

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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.