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Finding the Fourth Proportional to 65,790.86, 98,696.63 and 28,361.57

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Solution

The fourth proportional to 65,790.86, 98,696.63 and 28,361.57 is: 42,546.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,790.86 : 98,696.63 = 28,361.57 : x
  2. Step 2: Convert to fraction form
    65,790.86/98,696.63 = 28,361.57/x
  3. Step 3: Cross multiply
    65,790.86x = 98,696.63 × 28,361.57
  4. Step 4: Simplify right side
    65,790.86x = 2,799,190,957.93
  5. Step 5: Solve for x
    x = 2,799,190,957.93/65,790.86
  6. Step 6: Final answer
    x = 42,546.81

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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.