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Finding the Fourth Proportional to 93,790.31, 140,619.85 and 47,017.67

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Solution

The fourth proportional to 93,790.31, 140,619.85 and 47,017.67 is: 70,493.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,790.31 : 140,619.85 = 47,017.67 : x
  2. Step 2: Convert to fraction form
    93,790.31/140,619.85 = 47,017.67/x
  3. Step 3: Cross multiply
    93,790.31x = 140,619.85 × 47,017.67
  4. Step 4: Simplify right side
    93,790.31x = 6,611,616,882.11
  5. Step 5: Solve for x
    x = 6,611,616,882.11/93,790.31
  6. Step 6: Final answer
    x = 70,493.61

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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.