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Finding the Fourth Proportional to 86,004.78, 128,974.37 and 41,018.19

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Solution

The fourth proportional to 86,004.78, 128,974.37 and 41,018.19 is: 61,511.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,004.78 : 128,974.37 = 41,018.19 : x
  2. Step 2: Convert to fraction form
    86,004.78/128,974.37 = 41,018.19/x
  3. Step 3: Cross multiply
    86,004.78x = 128,974.37 × 41,018.19
  4. Step 4: Simplify right side
    86,004.78x = 5,290,295,008.70
  5. Step 5: Solve for x
    x = 5,290,295,008.70/86,004.78
  6. Step 6: Final answer
    x = 61,511.64

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1.5x scale

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.