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Finding the Fourth Proportional to 260,626.83, 359,721.12 and 158,685.90

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Solution

The fourth proportional to 260,626.83, 359,721.12 and 158,685.90 is: 219,020.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,626.83 : 359,721.12 = 158,685.90 : x
  2. Step 2: Convert to fraction form
    260,626.83/359,721.12 = 158,685.90/x
  3. Step 3: Cross multiply
    260,626.83x = 359,721.12 × 158,685.90
  4. Step 4: Simplify right side
    260,626.83x = 57,082,669,676.21
  5. Step 5: Solve for x
    x = 57,082,669,676.21/260,626.83
  6. Step 6: Final answer
    x = 219,020.70

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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.