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Finding the Fourth Proportional to 521,944.78, 782,917.18 and 127,960.78

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Solution

The fourth proportional to 521,944.78, 782,917.18 and 127,960.78 is: 191,941.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,944.78 : 782,917.18 = 127,960.78 : x
  2. Step 2: Convert to fraction form
    521,944.78/782,917.18 = 127,960.78/x
  3. Step 3: Cross multiply
    521,944.78x = 782,917.18 × 127,960.78
  4. Step 4: Simplify right side
    521,944.78x = 100,182,693,028.20
  5. Step 5: Solve for x
    x = 100,182,693,028.20/521,944.78
  6. Step 6: Final answer
    x = 191,941.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.