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Finding the Fourth Proportional to 383,436.92, 529,146.65 and 211,361.53

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Solution

The fourth proportional to 383,436.92, 529,146.65 and 211,361.53 is: 291,680.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,436.92 : 529,146.65 = 211,361.53 : x
  2. Step 2: Convert to fraction form
    383,436.92/529,146.65 = 211,361.53/x
  3. Step 3: Cross multiply
    383,436.92x = 529,146.65 × 211,361.53
  4. Step 4: Simplify right side
    383,436.92x = 111,841,247,720.36
  5. Step 5: Solve for x
    x = 111,841,247,720.36/383,436.92
  6. Step 6: Final answer
    x = 291,680.96

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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.