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Finding the Fourth Proportional to 93,172.80, 139,716.18 and 29,981.16

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Solution

The fourth proportional to 93,172.80, 139,716.18 and 29,981.16 is: 44,957.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,172.80 : 139,716.18 = 29,981.16 : x
  2. Step 2: Convert to fraction form
    93,172.80/139,716.18 = 29,981.16/x
  3. Step 3: Cross multiply
    93,172.80x = 139,716.18 × 29,981.16
  4. Step 4: Simplify right side
    93,172.80x = 4,188,853,147.17
  5. Step 5: Solve for x
    x = 4,188,853,147.17/93,172.80
  6. Step 6: Final answer
    x = 44,957.90

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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.