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Finding the Fourth Proportional to 79,613.76, 119,446.56 and 38,064

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Solution

The fourth proportional to 79,613.76, 119,446.56 and 38,064 is: 57,108.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,613.76 : 119,446.56 = 38,064 : x
  2. Step 2: Convert to fraction form
    79,613.76/119,446.56 = 38,064/x
  3. Step 3: Cross multiply
    79,613.76x = 119,446.56 × 38,064
  4. Step 4: Simplify right side
    79,613.76x = 4,546,613,859.84
  5. Step 5: Solve for x
    x = 4,546,613,859.84/79,613.76
  6. Step 6: Final answer
    x = 57,108.39

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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.