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Finding the Fourth Proportional to 383,611.77, 529,280.37 and 218,037.42

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Solution

The fourth proportional to 383,611.77, 529,280.37 and 218,037.42 is: 300,832.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,611.77 : 529,280.37 = 218,037.42 : x
  2. Step 2: Convert to fraction form
    383,611.77/529,280.37 = 218,037.42/x
  3. Step 3: Cross multiply
    383,611.77x = 529,280.37 × 218,037.42
  4. Step 4: Simplify right side
    383,611.77x = 115,402,926,331.45
  5. Step 5: Solve for x
    x = 115,402,926,331.45/383,611.77
  6. Step 6: Final answer
    x = 300,832.60

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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.