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Finding the Fourth Proportional to 93,390.76, 128,879.08 and 50,949.29

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Solution

The fourth proportional to 93,390.76, 128,879.08 and 50,949.29 is: 70,309.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,390.76 : 128,879.08 = 50,949.29 : x
  2. Step 2: Convert to fraction form
    93,390.76/128,879.08 = 50,949.29/x
  3. Step 3: Cross multiply
    93,390.76x = 128,879.08 × 50,949.29
  4. Step 4: Simplify right side
    93,390.76x = 6,566,297,621.85
  5. Step 5: Solve for x
    x = 6,566,297,621.85/93,390.76
  6. Step 6: Final answer
    x = 70,309.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.