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Finding the Fourth Proportional to 98,485.54, 147,765.54 and 38,556.86

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Solution

The fourth proportional to 98,485.54, 147,765.54 and 38,556.86 is: 57,849.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,485.54 : 147,765.54 = 38,556.86 : x
  2. Step 2: Convert to fraction form
    98,485.54/147,765.54 = 38,556.86/x
  3. Step 3: Cross multiply
    98,485.54x = 147,765.54 × 38,556.86
  4. Step 4: Simplify right side
    98,485.54x = 5,697,375,238.60
  5. Step 5: Solve for x
    x = 5,697,375,238.60/98,485.54
  6. Step 6: Final answer
    x = 57,849.87

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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.