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Finding the Fourth Proportional to 72,950.76, 109,382.40 and 35,436.96

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Solution

The fourth proportional to 72,950.76, 109,382.40 and 35,436.96 is: 53,134.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,950.76 : 109,382.40 = 35,436.96 : x
  2. Step 2: Convert to fraction form
    72,950.76/109,382.40 = 35,436.96/x
  3. Step 3: Cross multiply
    72,950.76x = 109,382.40 × 35,436.96
  4. Step 4: Simplify right side
    72,950.76x = 3,876,179,733.50
  5. Step 5: Solve for x
    x = 3,876,179,733.50/72,950.76
  6. Step 6: Final answer
    x = 53,134.19

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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.