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Finding the Fourth Proportional to 68,820.96, 103,161.72 and 46,636.58

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Solution

The fourth proportional to 68,820.96, 103,161.72 and 46,636.58 is: 69,907.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,820.96 : 103,161.72 = 46,636.58 : x
  2. Step 2: Convert to fraction form
    68,820.96/103,161.72 = 46,636.58/x
  3. Step 3: Cross multiply
    68,820.96x = 103,161.72 × 46,636.58
  4. Step 4: Simplify right side
    68,820.96x = 4,811,109,291.91
  5. Step 5: Solve for x
    x = 4,811,109,291.91/68,820.96
  6. Step 6: Final answer
    x = 69,907.62

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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.