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Finding the Fourth Proportional to 93,354.56, 139,986.36 and 31,004

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Solution

The fourth proportional to 93,354.56, 139,986.36 and 31,004 is: 46,490.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,354.56 : 139,986.36 = 31,004 : x
  2. Step 2: Convert to fraction form
    93,354.56/139,986.36 = 31,004/x
  3. Step 3: Cross multiply
    93,354.56x = 139,986.36 × 31,004
  4. Step 4: Simplify right side
    93,354.56x = 4,340,137,105.44
  5. Step 5: Solve for x
    x = 4,340,137,105.44/93,354.56
  6. Step 6: Final answer
    x = 46,490.90

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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.