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Finding the Fourth Proportional to 92,354.28, 138,538.70 and 29,179.28

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Solution

The fourth proportional to 92,354.28, 138,538.70 and 29,179.28 is: 43,771.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,354.28 : 138,538.70 = 29,179.28 : x
  2. Step 2: Convert to fraction form
    92,354.28/138,538.70 = 29,179.28/x
  3. Step 3: Cross multiply
    92,354.28x = 138,538.70 × 29,179.28
  4. Step 4: Simplify right side
    92,354.28x = 4,042,459,518.14
  5. Step 5: Solve for x
    x = 4,042,459,518.14/92,354.28
  6. Step 6: Final answer
    x = 43,771.22

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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.