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Finding the Fourth Proportional to 88,379.44, 121,916.21 and 61,475.22

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Solution

The fourth proportional to 88,379.44, 121,916.21 and 61,475.22 is: 84,802.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,379.44 : 121,916.21 = 61,475.22 : x
  2. Step 2: Convert to fraction form
    88,379.44/121,916.21 = 61,475.22/x
  3. Step 3: Cross multiply
    88,379.44x = 121,916.21 × 61,475.22
  4. Step 4: Simplify right side
    88,379.44x = 7,494,825,523.94
  5. Step 5: Solve for x
    x = 7,494,825,523.94/88,379.44
  6. Step 6: Final answer
    x = 84,802.82

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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.