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Finding the Fourth Proportional to 69,910.50, 96,483.78 and 39,703.98

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Solution

The fourth proportional to 69,910.50, 96,483.78 and 39,703.98 is: 54,795.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,910.50 : 96,483.78 = 39,703.98 : x
  2. Step 2: Convert to fraction form
    69,910.50/96,483.78 = 39,703.98/x
  3. Step 3: Cross multiply
    69,910.50x = 96,483.78 × 39,703.98
  4. Step 4: Simplify right side
    69,910.50x = 3,830,790,071.44
  5. Step 5: Solve for x
    x = 3,830,790,071.44/69,910.50
  6. Step 6: Final answer
    x = 54,795.63

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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.