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Finding the Fourth Proportional to 149,636.94, 206,492.55 and 81,652.22

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Solution

The fourth proportional to 149,636.94, 206,492.55 and 81,652.22 is: 112,676.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,636.94 : 206,492.55 = 81,652.22 : x
  2. Step 2: Convert to fraction form
    149,636.94/206,492.55 = 81,652.22/x
  3. Step 3: Cross multiply
    149,636.94x = 206,492.55 × 81,652.22
  4. Step 4: Simplify right side
    149,636.94x = 16,860,574,556.65
  5. Step 5: Solve for x
    x = 16,860,574,556.65/149,636.94
  6. Step 6: Final answer
    x = 112,676.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.