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Finding the Fourth Proportional to 101,376.32, 139,907.94 and 58,932.08

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Solution

The fourth proportional to 101,376.32, 139,907.94 and 58,932.08 is: 81,331.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,376.32 : 139,907.94 = 58,932.08 : x
  2. Step 2: Convert to fraction form
    101,376.32/139,907.94 = 58,932.08/x
  3. Step 3: Cross multiply
    101,376.32x = 139,907.94 × 58,932.08
  4. Step 4: Simplify right side
    101,376.32x = 8,245,065,912.72
  5. Step 5: Solve for x
    x = 8,245,065,912.72/101,376.32
  6. Step 6: Final answer
    x = 81,331.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.