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Finding the Fourth Proportional to 98,879.63, 136,453.05 and 53,556.54

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Solution

The fourth proportional to 98,879.63, 136,453.05 and 53,556.54 is: 73,907.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,879.63 : 136,453.05 = 53,556.54 : x
  2. Step 2: Convert to fraction form
    98,879.63/136,453.05 = 53,556.54/x
  3. Step 3: Cross multiply
    98,879.63x = 136,453.05 × 53,556.54
  4. Step 4: Simplify right side
    98,879.63x = 7,307,953,230.45
  5. Step 5: Solve for x
    x = 7,307,953,230.45/98,879.63
  6. Step 6: Final answer
    x = 73,907.57

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1.5x scale

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.