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Finding the Fourth Proportional to 52,791.44, 72,851.52 and 28,916.68

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Solution

The fourth proportional to 52,791.44, 72,851.52 and 28,916.68 is: 39,904.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,791.44 : 72,851.52 = 28,916.68 : x
  2. Step 2: Convert to fraction form
    52,791.44/72,851.52 = 28,916.68/x
  3. Step 3: Cross multiply
    52,791.44x = 72,851.52 × 28,916.68
  4. Step 4: Simplify right side
    52,791.44x = 2,106,624,091.35
  5. Step 5: Solve for x
    x = 2,106,624,091.35/52,791.44
  6. Step 6: Final answer
    x = 39,904.65

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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.