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Finding the Fourth Proportional to 79,230.78, 118,865.68 and 23,071.43

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Solution

The fourth proportional to 79,230.78, 118,865.68 and 23,071.43 is: 34,612.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,230.78 : 118,865.68 = 23,071.43 : x
  2. Step 2: Convert to fraction form
    79,230.78/118,865.68 = 23,071.43/x
  3. Step 3: Cross multiply
    79,230.78x = 118,865.68 × 23,071.43
  4. Step 4: Simplify right side
    79,230.78x = 2,742,401,455.01
  5. Step 5: Solve for x
    x = 2,742,401,455.01/79,230.78
  6. Step 6: Final answer
    x = 34,612.83

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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.