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Finding the Fourth Proportional to 89,762.91, 123,879.96 and 49,483.83

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Solution

The fourth proportional to 89,762.91, 123,879.96 and 49,483.83 is: 68,291.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,762.91 : 123,879.96 = 49,483.83 : x
  2. Step 2: Convert to fraction form
    89,762.91/123,879.96 = 49,483.83/x
  3. Step 3: Cross multiply
    89,762.91x = 123,879.96 × 49,483.83
  4. Step 4: Simplify right side
    89,762.91x = 6,130,054,881.05
  5. Step 5: Solve for x
    x = 6,130,054,881.05/89,762.91
  6. Step 6: Final answer
    x = 68,291.62

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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.