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Finding the Fourth Proportional to 383,315.75, 528,953.73 and 219,937.67

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Solution

The fourth proportional to 383,315.75, 528,953.73 and 219,937.67 is: 303,501.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,315.75 : 528,953.73 = 219,937.67 : x
  2. Step 2: Convert to fraction form
    383,315.75/528,953.73 = 219,937.67/x
  3. Step 3: Cross multiply
    383,315.75x = 528,953.73 × 219,937.67
  4. Step 4: Simplify right side
    383,315.75x = 116,336,850,914.01
  5. Step 5: Solve for x
    x = 116,336,850,914.01/383,315.75
  6. Step 6: Final answer
    x = 303,501.36

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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.