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Finding the Fourth Proportional to 92,212.90, 138,300.45 and 25,636.30

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Solution

The fourth proportional to 92,212.90, 138,300.45 and 25,636.30 is: 38,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,212.90 : 138,300.45 = 25,636.30 : x
  2. Step 2: Convert to fraction form
    92,212.90/138,300.45 = 25,636.30/x
  3. Step 3: Cross multiply
    92,212.90x = 138,300.45 × 25,636.30
  4. Step 4: Simplify right side
    92,212.90x = 3,545,511,826.34
  5. Step 5: Solve for x
    x = 3,545,511,826.34/92,212.90
  6. Step 6: Final answer
    x = 38,449.20

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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.