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Finding the Fourth Proportional to 72,656.37, 108,984.60 and 25,876.44

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Solution

The fourth proportional to 72,656.37, 108,984.60 and 25,876.44 is: 38,814.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,656.37 : 108,984.60 = 25,876.44 : x
  2. Step 2: Convert to fraction form
    72,656.37/108,984.60 = 25,876.44/x
  3. Step 3: Cross multiply
    72,656.37x = 108,984.60 × 25,876.44
  4. Step 4: Simplify right side
    72,656.37x = 2,820,133,462.82
  5. Step 5: Solve for x
    x = 2,820,133,462.82/72,656.37
  6. Step 6: Final answer
    x = 38,814.68

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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.