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Finding the Fourth Proportional to 505,441.70, 697,511.95 and 276,003.66

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Solution

The fourth proportional to 505,441.70, 697,511.95 and 276,003.66 is: 380,886.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,441.70 : 697,511.95 = 276,003.66 : x
  2. Step 2: Convert to fraction form
    505,441.70/697,511.95 = 276,003.66/x
  3. Step 3: Cross multiply
    505,441.70x = 697,511.95 × 276,003.66
  4. Step 4: Simplify right side
    505,441.70x = 192,515,850,403.73
  5. Step 5: Solve for x
    x = 192,515,850,403.73/505,441.70
  6. Step 6: Final answer
    x = 380,886.37

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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.