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Finding the Fourth Proportional to 139,326.60, 208,846.92 and 55,052.64

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Solution

The fourth proportional to 139,326.60, 208,846.92 and 55,052.64 is: 82,522.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,326.60 : 208,846.92 = 55,052.64 : x
  2. Step 2: Convert to fraction form
    139,326.60/208,846.92 = 55,052.64/x
  3. Step 3: Cross multiply
    139,326.60x = 208,846.92 × 55,052.64
  4. Step 4: Simplify right side
    139,326.60x = 11,497,574,301.87
  5. Step 5: Solve for x
    x = 11,497,574,301.87/139,326.60
  6. Step 6: Final answer
    x = 82,522.46

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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.