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Finding the Fourth Proportional to 248,776.80, 373,213.80 and 98,991.60

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Solution

The fourth proportional to 248,776.80, 373,213.80 and 98,991.60 is: 148,506.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,776.80 : 373,213.80 = 98,991.60 : x
  2. Step 2: Convert to fraction form
    248,776.80/373,213.80 = 98,991.60/x
  3. Step 3: Cross multiply
    248,776.80x = 373,213.80 × 98,991.60
  4. Step 4: Simplify right side
    248,776.80x = 36,945,031,204.08
  5. Step 5: Solve for x
    x = 36,945,031,204.08/248,776.80
  6. Step 6: Final answer
    x = 148,506.74

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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.