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Finding the Fourth Proportional to 71,940.48, 98,749.68 and 63,804.84

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Solution

The fourth proportional to 71,940.48, 98,749.68 and 63,804.84 is: 87,582.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,940.48 : 98,749.68 = 63,804.84 : x
  2. Step 2: Convert to fraction form
    71,940.48/98,749.68 = 63,804.84/x
  3. Step 3: Cross multiply
    71,940.48x = 98,749.68 × 63,804.84
  4. Step 4: Simplify right side
    71,940.48x = 6,300,707,532.45
  5. Step 5: Solve for x
    x = 6,300,707,532.45/71,940.48
  6. Step 6: Final answer
    x = 87,582.23

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.