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Finding the Fourth Proportional to 253,889.33, 350,351.10 and 139,147.70

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Solution

The fourth proportional to 253,889.33, 350,351.10 and 139,147.70 is: 192,014.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,889.33 : 350,351.10 = 139,147.70 : x
  2. Step 2: Convert to fraction form
    253,889.33/350,351.10 = 139,147.70/x
  3. Step 3: Cross multiply
    253,889.33x = 350,351.10 × 139,147.70
  4. Step 4: Simplify right side
    253,889.33x = 48,750,548,005.71
  5. Step 5: Solve for x
    x = 48,750,548,005.71/253,889.33
  6. Step 6: Final answer
    x = 192,014.96

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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.