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Finding the Fourth Proportional to 253,893.15, 350,367.54 and 139,172.04

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Solution

The fourth proportional to 253,893.15, 350,367.54 and 139,172.04 is: 192,054.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,893.15 : 350,367.54 = 139,172.04 : x
  2. Step 2: Convert to fraction form
    253,893.15/350,367.54 = 139,172.04/x
  3. Step 3: Cross multiply
    253,893.15x = 350,367.54 × 139,172.04
  4. Step 4: Simplify right side
    253,893.15x = 48,761,365,291.58
  5. Step 5: Solve for x
    x = 48,761,365,291.58/253,893.15
  6. Step 6: Final answer
    x = 192,054.67

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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.