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Finding the Fourth Proportional to 139,379.97, 208,946.03 and 60,451.14

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Solution

The fourth proportional to 139,379.97, 208,946.03 and 60,451.14 is: 90,622.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,379.97 : 208,946.03 = 60,451.14 : x
  2. Step 2: Convert to fraction form
    139,379.97/208,946.03 = 60,451.14/x
  3. Step 3: Cross multiply
    139,379.97x = 208,946.03 × 60,451.14
  4. Step 4: Simplify right side
    139,379.97x = 12,631,026,533.30
  5. Step 5: Solve for x
    x = 12,631,026,533.30/139,379.97
  6. Step 6: Final answer
    x = 90,622.97

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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.