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Finding the Fourth Proportional to 331,059.78, 456,830.90 and 185,832.30

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Solution

The fourth proportional to 331,059.78, 456,830.90 and 185,832.30 is: 256,430.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,059.78 : 456,830.90 = 185,832.30 : x
  2. Step 2: Convert to fraction form
    331,059.78/456,830.90 = 185,832.30/x
  3. Step 3: Cross multiply
    331,059.78x = 456,830.90 × 185,832.30
  4. Step 4: Simplify right side
    331,059.78x = 84,893,936,858.07
  5. Step 5: Solve for x
    x = 84,893,936,858.07/331,059.78
  6. Step 6: Final answer
    x = 256,430.84

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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.