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Finding the Fourth Proportional to 93,079.91, 139,522.66 and 45,629.30

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Solution

The fourth proportional to 93,079.91, 139,522.66 and 45,629.30 is: 68,396.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,079.91 : 139,522.66 = 45,629.30 : x
  2. Step 2: Convert to fraction form
    93,079.91/139,522.66 = 45,629.30/x
  3. Step 3: Cross multiply
    93,079.91x = 139,522.66 × 45,629.30
  4. Step 4: Simplify right side
    93,079.91x = 6,366,321,544.67
  5. Step 5: Solve for x
    x = 6,366,321,544.67/93,079.91
  6. Step 6: Final answer
    x = 68,396.30

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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.