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Finding the Fourth Proportional to 386,940.01, 534,010.75 and 214,891.15

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Solution

The fourth proportional to 386,940.01, 534,010.75 and 214,891.15 is: 296,568.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,940.01 : 534,010.75 = 214,891.15 : x
  2. Step 2: Convert to fraction form
    386,940.01/534,010.75 = 214,891.15/x
  3. Step 3: Cross multiply
    386,940.01x = 534,010.75 × 214,891.15
  4. Step 4: Simplify right side
    386,940.01x = 114,754,184,179.86
  5. Step 5: Solve for x
    x = 114,754,184,179.86/386,940.01
  6. Step 6: Final answer
    x = 296,568.41

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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.