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Finding the Fourth Proportional to 113,912.85, 157,168.17 and 65,512.14

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Solution

The fourth proportional to 113,912.85, 157,168.17 and 65,512.14 is: 90,388.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,912.85 : 157,168.17 = 65,512.14 : x
  2. Step 2: Convert to fraction form
    113,912.85/157,168.17 = 65,512.14/x
  3. Step 3: Cross multiply
    113,912.85x = 157,168.17 × 65,512.14
  4. Step 4: Simplify right side
    113,912.85x = 10,296,423,156.58
  5. Step 5: Solve for x
    x = 10,296,423,156.58/113,912.85
  6. Step 6: Final answer
    x = 90,388.60

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1.5x scale

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.