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Finding the Fourth Proportional to 281,094.20, 421,713.30 and 162,553.40

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Solution

The fourth proportional to 281,094.20, 421,713.30 and 162,553.40 is: 243,871.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,094.20 : 421,713.30 = 162,553.40 : x
  2. Step 2: Convert to fraction form
    281,094.20/421,713.30 = 162,553.40/x
  3. Step 3: Cross multiply
    281,094.20x = 421,713.30 × 162,553.40
  4. Step 4: Simplify right side
    281,094.20x = 68,550,930,740.22
  5. Step 5: Solve for x
    x = 68,550,930,740.22/281,094.20
  6. Step 6: Final answer
    x = 243,871.74

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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.