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Finding the Fourth Proportional to 383,319.75, 528,959.25 and 219,941.67

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Solution

The fourth proportional to 383,319.75, 528,959.25 and 219,941.67 is: 303,506.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,319.75 : 528,959.25 = 219,941.67 : x
  2. Step 2: Convert to fraction form
    383,319.75/528,959.25 = 219,941.67/x
  3. Step 3: Cross multiply
    383,319.75x = 528,959.25 × 219,941.67
  4. Step 4: Simplify right side
    383,319.75x = 116,340,180,806.95
  5. Step 5: Solve for x
    x = 116,340,180,806.95/383,319.75
  6. Step 6: Final answer
    x = 303,506.88

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1.5x scale

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.