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Finding the Fourth Proportional to 4,620.53, 6,931.38 and 1,809.01

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Solution

The fourth proportional to 4,620.53, 6,931.38 and 1,809.01 is: 2,713.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,620.53 : 6,931.38 = 1,809.01 : x
  2. Step 2: Convert to fraction form
    4,620.53/6,931.38 = 1,809.01/x
  3. Step 3: Cross multiply
    4,620.53x = 6,931.38 × 1,809.01
  4. Step 4: Simplify right side
    4,620.53x = 12,538,900.32
  5. Step 5: Solve for x
    x = 12,538,900.32/4,620.53
  6. Step 6: Final answer
    x = 2,713.73

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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.