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Finding the Fourth Proportional to 68,043.76, 102,042.93 and 28,593.52

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Solution

The fourth proportional to 68,043.76, 102,042.93 and 28,593.52 is: 42,880.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,043.76 : 102,042.93 = 28,593.52 : x
  2. Step 2: Convert to fraction form
    68,043.76/102,042.93 = 28,593.52/x
  3. Step 3: Cross multiply
    68,043.76x = 102,042.93 × 28,593.52
  4. Step 4: Simplify right side
    68,043.76x = 2,917,766,559.81
  5. Step 5: Solve for x
    x = 2,917,766,559.81/68,043.76
  6. Step 6: Final answer
    x = 42,880.74

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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.