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Finding the Fourth Proportional to 303,468.80, 455,203.20 and 78,827.46

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Solution

The fourth proportional to 303,468.80, 455,203.20 and 78,827.46 is: 118,241.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,468.80 : 455,203.20 = 78,827.46 : x
  2. Step 2: Convert to fraction form
    303,468.80/455,203.20 = 78,827.46/x
  3. Step 3: Cross multiply
    303,468.80x = 455,203.20 × 78,827.46
  4. Step 4: Simplify right side
    303,468.80x = 35,882,512,039.87
  5. Step 5: Solve for x
    x = 35,882,512,039.87/303,468.80
  6. Step 6: Final answer
    x = 118,241.19

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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.