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Finding the Fourth Proportional to 93,175.20, 139,762.80 and 34,012.80

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Solution

The fourth proportional to 93,175.20, 139,762.80 and 34,012.80 is: 51,019.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,175.20 : 139,762.80 = 34,012.80 : x
  2. Step 2: Convert to fraction form
    93,175.20/139,762.80 = 34,012.80/x
  3. Step 3: Cross multiply
    93,175.20x = 139,762.80 × 34,012.80
  4. Step 4: Simplify right side
    93,175.20x = 4,753,724,163.84
  5. Step 5: Solve for x
    x = 4,753,724,163.84/93,175.20
  6. Step 6: Final answer
    x = 51,019.20

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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.