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Finding the Fourth Proportional to 101,356.98, 139,881.23 and 58,912.75

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Solution

The fourth proportional to 101,356.98, 139,881.23 and 58,912.75 is: 81,304.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,356.98 : 139,881.23 = 58,912.75 : x
  2. Step 2: Convert to fraction form
    101,356.98/139,881.23 = 58,912.75/x
  3. Step 3: Cross multiply
    101,356.98x = 139,881.23 × 58,912.75
  4. Step 4: Simplify right side
    101,356.98x = 8,240,787,932.68
  5. Step 5: Solve for x
    x = 8,240,787,932.68/101,356.98
  6. Step 6: Final answer
    x = 81,304.59

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1.5x scale

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.