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Finding the Fourth Proportional to 383,293.87, 528,923.69 and 219,915.74

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Solution

The fourth proportional to 383,293.87, 528,923.69 and 219,915.74 is: 303,471.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,293.87 : 528,923.69 = 219,915.74 : x
  2. Step 2: Convert to fraction form
    383,293.87/528,923.69 = 219,915.74/x
  3. Step 3: Cross multiply
    383,293.87x = 528,923.69 × 219,915.74
  4. Step 4: Simplify right side
    383,293.87x = 116,318,645,085.48
  5. Step 5: Solve for x
    x = 116,318,645,085.48/383,293.87
  6. Step 6: Final answer
    x = 303,471.19

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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.