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Finding the Fourth Proportional to 253,963.56, 350,450.76 and 139,223.88

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Solution

The fourth proportional to 253,963.56, 350,450.76 and 139,223.88 is: 192,118.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,963.56 : 350,450.76 = 139,223.88 : x
  2. Step 2: Convert to fraction form
    253,963.56/350,450.76 = 139,223.88/x
  3. Step 3: Cross multiply
    253,963.56x = 350,450.76 × 139,223.88
  4. Step 4: Simplify right side
    253,963.56x = 48,791,114,556.15
  5. Step 5: Solve for x
    x = 48,791,114,556.15/253,963.56
  6. Step 6: Final answer
    x = 192,118.56

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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.