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Finding the Fourth Proportional to 72,572.32, 108,825.66 and 25,826.44

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Solution

The fourth proportional to 72,572.32, 108,825.66 and 25,826.44 is: 38,727.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,572.32 : 108,825.66 = 25,826.44 : x
  2. Step 2: Convert to fraction form
    72,572.32/108,825.66 = 25,826.44/x
  3. Step 3: Cross multiply
    72,572.32x = 108,825.66 × 25,826.44
  4. Step 4: Simplify right side
    72,572.32x = 2,810,579,378.45
  5. Step 5: Solve for x
    x = 2,810,579,378.45/72,572.32
  6. Step 6: Final answer
    x = 38,727.98

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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.