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Finding the Fourth Proportional to 505,761.68, 697,999.40 and 276,353.84

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Solution

The fourth proportional to 505,761.68, 697,999.40 and 276,353.84 is: 381,394.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,761.68 : 697,999.40 = 276,353.84 : x
  2. Step 2: Convert to fraction form
    505,761.68/697,999.40 = 276,353.84/x
  3. Step 3: Cross multiply
    505,761.68x = 697,999.40 × 276,353.84
  4. Step 4: Simplify right side
    505,761.68x = 192,894,809,635.93
  5. Step 5: Solve for x
    x = 192,894,809,635.93/505,761.68
  6. Step 6: Final answer
    x = 381,394.67

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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.