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Finding the Fourth Proportional to 98,858.76, 148,309.92 and 28,743.54

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Solution

The fourth proportional to 98,858.76, 148,309.92 and 28,743.54 is: 43,121.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,858.76 : 148,309.92 = 28,743.54 : x
  2. Step 2: Convert to fraction form
    98,858.76/148,309.92 = 28,743.54/x
  3. Step 3: Cross multiply
    98,858.76x = 148,309.92 × 28,743.54
  4. Step 4: Simplify right side
    98,858.76x = 4,262,952,117.92
  5. Step 5: Solve for x
    x = 4,262,952,117.92/98,858.76
  6. Step 6: Final answer
    x = 43,121.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.