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Finding the Fourth Proportional to 139,263.32, 208,894.62 and 50,516.66

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Solution

The fourth proportional to 139,263.32, 208,894.62 and 50,516.66 is: 75,774.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,263.32 : 208,894.62 = 50,516.66 : x
  2. Step 2: Convert to fraction form
    139,263.32/208,894.62 = 50,516.66/x
  3. Step 3: Cross multiply
    139,263.32x = 208,894.62 × 50,516.66
  4. Step 4: Simplify right side
    139,263.32x = 10,552,658,494.37
  5. Step 5: Solve for x
    x = 10,552,658,494.37/139,263.32
  6. Step 6: Final answer
    x = 75,774.86

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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.