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Finding the Fourth Proportional to 93,766.62, 140,708.25 and 68,421.72

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Solution

The fourth proportional to 93,766.62, 140,708.25 and 68,421.72 is: 102,675.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,766.62 : 140,708.25 = 68,421.72 : x
  2. Step 2: Convert to fraction form
    93,766.62/140,708.25 = 68,421.72/x
  3. Step 3: Cross multiply
    93,766.62x = 140,708.25 × 68,421.72
  4. Step 4: Simplify right side
    93,766.62x = 9,627,500,483.19
  5. Step 5: Solve for x
    x = 9,627,500,483.19/93,766.62
  6. Step 6: Final answer
    x = 102,675.14

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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.