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Finding the Fourth Proportional to 331,057.78, 456,828.15 and 185,830.30

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Solution

The fourth proportional to 331,057.78, 456,828.15 and 185,830.30 is: 256,428.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,057.78 : 456,828.15 = 185,830.30 : x
  2. Step 2: Convert to fraction form
    331,057.78/456,828.15 = 185,830.30/x
  3. Step 3: Cross multiply
    331,057.78x = 456,828.15 × 185,830.30
  4. Step 4: Simplify right side
    331,057.78x = 84,892,512,162.95
  5. Step 5: Solve for x
    x = 84,892,512,162.95/331,057.78
  6. Step 6: Final answer
    x = 256,428.08

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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.