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Finding the Fourth Proportional to 273,901.10, 410,923.65 and 86,912.30

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Solution

The fourth proportional to 273,901.10, 410,923.65 and 86,912.30 is: 130,391.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,901.10 : 410,923.65 = 86,912.30 : x
  2. Step 2: Convert to fraction form
    273,901.10/410,923.65 = 86,912.30/x
  3. Step 3: Cross multiply
    273,901.10x = 410,923.65 × 86,912.30
  4. Step 4: Simplify right side
    273,901.10x = 35,714,319,545.90
  5. Step 5: Solve for x
    x = 35,714,319,545.90/273,901.10
  6. Step 6: Final answer
    x = 130,391.30

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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.