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Finding the Fourth Proportional to 93,290.36, 139,980.53 and 45,879.73

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Solution

The fourth proportional to 93,290.36, 139,980.53 and 45,879.73 is: 68,841.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,290.36 : 139,980.53 = 45,879.73 : x
  2. Step 2: Convert to fraction form
    93,290.36/139,980.53 = 45,879.73/x
  3. Step 3: Cross multiply
    93,290.36x = 139,980.53 × 45,879.73
  4. Step 4: Simplify right side
    93,290.36x = 6,422,268,754.22
  5. Step 5: Solve for x
    x = 6,422,268,754.22/93,290.36
  6. Step 6: Final answer
    x = 68,841.72

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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.