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Finding the Fourth Proportional to 139,336.44, 208,988.44 and 49,368.92

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Solution

The fourth proportional to 139,336.44, 208,988.44 and 49,368.92 is: 74,047.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,336.44 : 208,988.44 = 49,368.92 : x
  2. Step 2: Convert to fraction form
    139,336.44/208,988.44 = 49,368.92/x
  3. Step 3: Cross multiply
    139,336.44x = 208,988.44 × 49,368.92
  4. Step 4: Simplify right side
    139,336.44x = 10,317,533,575.28
  5. Step 5: Solve for x
    x = 10,317,533,575.28/139,336.44
  6. Step 6: Final answer
    x = 74,047.63

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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.