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Finding the Fourth Proportional to 273,911.60, 410,939.40 and 86,922.80

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Solution

The fourth proportional to 273,911.60, 410,939.40 and 86,922.80 is: 130,407.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,911.60 : 410,939.40 = 86,922.80 : x
  2. Step 2: Convert to fraction form
    273,911.60/410,939.40 = 86,922.80/x
  3. Step 3: Cross multiply
    273,911.60x = 410,939.40 × 86,922.80
  4. Step 4: Simplify right side
    273,911.60x = 35,720,003,278.32
  5. Step 5: Solve for x
    x = 35,720,003,278.32/273,911.60
  6. Step 6: Final answer
    x = 130,407.05

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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.