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Finding the Fourth Proportional to 93,019.80, 139,572.90 and 48,696.60

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Solution

The fourth proportional to 93,019.80, 139,572.90 and 48,696.60 is: 73,067.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,019.80 : 139,572.90 = 48,696.60 : x
  2. Step 2: Convert to fraction form
    93,019.80/139,572.90 = 48,696.60/x
  3. Step 3: Cross multiply
    93,019.80x = 139,572.90 × 48,696.60
  4. Step 4: Simplify right side
    93,019.80x = 6,796,725,682.14
  5. Step 5: Solve for x
    x = 6,796,725,682.14/93,019.80
  6. Step 6: Final answer
    x = 73,067.52

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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.