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Finding the Fourth Proportional to 97,910.98, 134,952.69 and 74,932.90

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Solution

The fourth proportional to 97,910.98, 134,952.69 and 74,932.90 is: 103,281.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,910.98 : 134,952.69 = 74,932.90 : x
  2. Step 2: Convert to fraction form
    97,910.98/134,952.69 = 74,932.90/x
  3. Step 3: Cross multiply
    97,910.98x = 134,952.69 × 74,932.90
  4. Step 4: Simplify right side
    97,910.98x = 10,112,396,424.50
  5. Step 5: Solve for x
    x = 10,112,396,424.50/97,910.98
  6. Step 6: Final answer
    x = 103,281.54

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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.