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Finding the Fourth Proportional to 162,754.80, 243,986.40 and 106,621.80

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Solution

The fourth proportional to 162,754.80, 243,986.40 and 106,621.80 is: 159,837.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,754.80 : 243,986.40 = 106,621.80 : x
  2. Step 2: Convert to fraction form
    162,754.80/243,986.40 = 106,621.80/x
  3. Step 3: Cross multiply
    162,754.80x = 243,986.40 × 106,621.80
  4. Step 4: Simplify right side
    162,754.80x = 26,014,269,143.52
  5. Step 5: Solve for x
    x = 26,014,269,143.52/162,754.80
  6. Step 6: Final answer
    x = 159,837.19

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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.