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Finding the Fourth Proportional to 89,866.48, 124,014.94 and 49,580.60

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Solution

The fourth proportional to 89,866.48, 124,014.94 and 49,580.60 is: 68,420.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,866.48 : 124,014.94 = 49,580.60 : x
  2. Step 2: Convert to fraction form
    89,866.48/124,014.94 = 49,580.60/x
  3. Step 3: Cross multiply
    89,866.48x = 124,014.94 × 49,580.60
  4. Step 4: Simplify right side
    89,866.48x = 6,148,735,134.16
  5. Step 5: Solve for x
    x = 6,148,735,134.16/89,866.48
  6. Step 6: Final answer
    x = 68,420.79

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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.