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Finding the Fourth Proportional to 562,405.70, 843,682.55 and 207,668.90

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Solution

The fourth proportional to 562,405.70, 843,682.55 and 207,668.90 is: 311,530.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,405.70 : 843,682.55 = 207,668.90 : x
  2. Step 2: Convert to fraction form
    562,405.70/843,682.55 = 207,668.90/x
  3. Step 3: Cross multiply
    562,405.70x = 843,682.55 × 207,668.90
  4. Step 4: Simplify right side
    562,405.70x = 175,206,627,107.70
  5. Step 5: Solve for x
    x = 175,206,627,107.70/562,405.70
  6. Step 6: Final answer
    x = 311,530.67

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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.