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Finding the Fourth Proportional to 88,099.93, 121,582.79 and 49,861.45

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Solution

The fourth proportional to 88,099.93, 121,582.79 and 49,861.45 is: 68,811.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,099.93 : 121,582.79 = 49,861.45 : x
  2. Step 2: Convert to fraction form
    88,099.93/121,582.79 = 49,861.45/x
  3. Step 3: Cross multiply
    88,099.93x = 121,582.79 × 49,861.45
  4. Step 4: Simplify right side
    88,099.93x = 6,062,294,204.45
  5. Step 5: Solve for x
    x = 6,062,294,204.45/88,099.93
  6. Step 6: Final answer
    x = 68,811.57

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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.