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Finding the Fourth Proportional to 202,379.15, 303,513.29 and 76,009.61

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Solution

The fourth proportional to 202,379.15, 303,513.29 and 76,009.61 is: 113,993.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,379.15 : 303,513.29 = 76,009.61 : x
  2. Step 2: Convert to fraction form
    202,379.15/303,513.29 = 76,009.61/x
  3. Step 3: Cross multiply
    202,379.15x = 303,513.29 × 76,009.61
  4. Step 4: Simplify right side
    202,379.15x = 23,069,927,751.52
  5. Step 5: Solve for x
    x = 23,069,927,751.52/202,379.15
  6. Step 6: Final answer
    x = 113,993.60

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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.