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Finding the Fourth Proportional to 194,644.80, 268,610.40 and 105,220.80

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Solution

The fourth proportional to 194,644.80, 268,610.40 and 105,220.80 is: 145,205.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,644.80 : 268,610.40 = 105,220.80 : x
  2. Step 2: Convert to fraction form
    194,644.80/268,610.40 = 105,220.80/x
  3. Step 3: Cross multiply
    194,644.80x = 268,610.40 × 105,220.80
  4. Step 4: Simplify right side
    194,644.80x = 28,263,401,176.32
  5. Step 5: Solve for x
    x = 28,263,401,176.32/194,644.80
  6. Step 6: Final answer
    x = 145,205.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.