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Finding the Fourth Proportional to 303,743.20, 455,614.80 and 162,025.60

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Solution

The fourth proportional to 303,743.20, 455,614.80 and 162,025.60 is: 243,038.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,743.20 : 455,614.80 = 162,025.60 : x
  2. Step 2: Convert to fraction form
    303,743.20/455,614.80 = 162,025.60/x
  3. Step 3: Cross multiply
    303,743.20x = 455,614.80 × 162,025.60
  4. Step 4: Simplify right side
    303,743.20x = 73,821,261,338.88
  5. Step 5: Solve for x
    x = 73,821,261,338.88/303,743.20
  6. Step 6: Final answer
    x = 243,038.40

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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.