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Finding the Fourth Proportional to 383,181.63, 528,785.98 and 211,096.18

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Solution

The fourth proportional to 383,181.63, 528,785.98 and 211,096.18 is: 291,310.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,181.63 : 528,785.98 = 211,096.18 : x
  2. Step 2: Convert to fraction form
    383,181.63/528,785.98 = 211,096.18/x
  3. Step 3: Cross multiply
    383,181.63x = 528,785.98 × 211,096.18
  4. Step 4: Simplify right side
    383,181.63x = 111,624,700,415.56
  5. Step 5: Solve for x
    x = 111,624,700,415.56/383,181.63
  6. Step 6: Final answer
    x = 291,310.16

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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.