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Finding the Fourth Proportional to 74,896.56, 103,364.91 and 72,573.48

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Solution

The fourth proportional to 74,896.56, 103,364.91 and 72,573.48 is: 100,158.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,896.56 : 103,364.91 = 72,573.48 : x
  2. Step 2: Convert to fraction form
    74,896.56/103,364.91 = 72,573.48/x
  3. Step 3: Cross multiply
    74,896.56x = 103,364.91 × 72,573.48
  4. Step 4: Simplify right side
    74,896.56x = 7,501,551,228.59
  5. Step 5: Solve for x
    x = 7,501,551,228.59/74,896.56
  6. Step 6: Final answer
    x = 100,158.82

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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.