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Finding the Fourth Proportional to 139,166.76, 208,396.86 and 116,618.19

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Solution

The fourth proportional to 139,166.76, 208,396.86 and 116,618.19 is: 174,631.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,166.76 : 208,396.86 = 116,618.19 : x
  2. Step 2: Convert to fraction form
    139,166.76/208,396.86 = 116,618.19/x
  3. Step 3: Cross multiply
    139,166.76x = 208,396.86 × 116,618.19
  4. Step 4: Simplify right side
    139,166.76x = 24,302,864,614.88
  5. Step 5: Solve for x
    x = 24,302,864,614.88/139,166.76
  6. Step 6: Final answer
    x = 174,631.25

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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.