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Finding the Fourth Proportional to 204,626.80, 307,596.30 and 145,869.40

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Solution

The fourth proportional to 204,626.80, 307,596.30 and 145,869.40 is: 219,271.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,626.80 : 307,596.30 = 145,869.40 : x
  2. Step 2: Convert to fraction form
    204,626.80/307,596.30 = 145,869.40/x
  3. Step 3: Cross multiply
    204,626.80x = 307,596.30 × 145,869.40
  4. Step 4: Simplify right side
    204,626.80x = 44,868,887,723.22
  5. Step 5: Solve for x
    x = 44,868,887,723.22/204,626.80
  6. Step 6: Final answer
    x = 219,271.80

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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.