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Finding the Fourth Proportional to 620,919.57, 930,600.23 and 265,515.67

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Solution

The fourth proportional to 620,919.57, 930,600.23 and 265,515.67 is: 397,940.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,919.57 : 930,600.23 = 265,515.67 : x
  2. Step 2: Convert to fraction form
    620,919.57/930,600.23 = 265,515.67/x
  3. Step 3: Cross multiply
    620,919.57x = 930,600.23 × 265,515.67
  4. Step 4: Simplify right side
    620,919.57x = 247,088,938,917.60
  5. Step 5: Solve for x
    x = 247,088,938,917.60/620,919.57
  6. Step 6: Final answer
    x = 397,940.33

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1.5x scale

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.