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Finding the Fourth Proportional to 248,803.20, 373,204.80 and 91,047.60

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Solution

The fourth proportional to 248,803.20, 373,204.80 and 91,047.60 is: 136,571.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,803.20 : 373,204.80 = 91,047.60 : x
  2. Step 2: Convert to fraction form
    248,803.20/373,204.80 = 91,047.60/x
  3. Step 3: Cross multiply
    248,803.20x = 373,204.80 × 91,047.60
  4. Step 4: Simplify right side
    248,803.20x = 33,979,401,348.48
  5. Step 5: Solve for x
    x = 33,979,401,348.48/248,803.20
  6. Step 6: Final answer
    x = 136,571.40

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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.