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Finding the Fourth Proportional to 139,495.38, 209,286.84 and 46,066.74

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Solution

The fourth proportional to 139,495.38, 209,286.84 and 46,066.74 is: 69,114.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,495.38 : 209,286.84 = 46,066.74 : x
  2. Step 2: Convert to fraction form
    139,495.38/209,286.84 = 46,066.74/x
  3. Step 3: Cross multiply
    139,495.38x = 209,286.84 × 46,066.74
  4. Step 4: Simplify right side
    139,495.38x = 9,641,162,443.70
  5. Step 5: Solve for x
    x = 9,641,162,443.70/139,495.38
  6. Step 6: Final answer
    x = 69,114.56

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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.