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Finding the Fourth Proportional to 52,672.99, 72,688.74 and 28,799.86

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Solution

The fourth proportional to 52,672.99, 72,688.74 and 28,799.86 is: 39,743.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,672.99 : 72,688.74 = 28,799.86 : x
  2. Step 2: Convert to fraction form
    52,672.99/72,688.74 = 28,799.86/x
  3. Step 3: Cross multiply
    52,672.99x = 72,688.74 × 28,799.86
  4. Step 4: Simplify right side
    52,672.99x = 2,093,425,535.58
  5. Step 5: Solve for x
    x = 2,093,425,535.58/52,672.99
  6. Step 6: Final answer
    x = 39,743.81

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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.