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Finding the Fourth Proportional to 72,586.40, 108,910.78 and 37,550.66

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Solution

The fourth proportional to 72,586.40, 108,910.78 and 37,550.66 is: 56,342.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,586.40 : 108,910.78 = 37,550.66 : x
  2. Step 2: Convert to fraction form
    72,586.40/108,910.78 = 37,550.66/x
  3. Step 3: Cross multiply
    72,586.40x = 108,910.78 × 37,550.66
  4. Step 4: Simplify right side
    72,586.40x = 4,089,671,031.68
  5. Step 5: Solve for x
    x = 4,089,671,031.68/72,586.40
  6. Step 6: Final answer
    x = 56,342.12

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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.