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Finding the Fourth Proportional to 239,780, 359,676.60 and 73,568

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Solution

The fourth proportional to 239,780, 359,676.60 and 73,568 is: 110,354.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,780 : 359,676.60 = 73,568 : x
  2. Step 2: Convert to fraction form
    239,780/359,676.60 = 73,568/x
  3. Step 3: Cross multiply
    239,780x = 359,676.60 × 73,568
  4. Step 4: Simplify right side
    239,780x = 26,460,688,108.80
  5. Step 5: Solve for x
    x = 26,460,688,108.80/239,780
  6. Step 6: Final answer
    x = 110,354.02

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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.