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Finding the Fourth Proportional to 4,700.76, 7,051.35 and 2,619.19

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Solution

The fourth proportional to 4,700.76, 7,051.35 and 2,619.19 is: 3,928.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,700.76 : 7,051.35 = 2,619.19 : x
  2. Step 2: Convert to fraction form
    4,700.76/7,051.35 = 2,619.19/x
  3. Step 3: Cross multiply
    4,700.76x = 7,051.35 × 2,619.19
  4. Step 4: Simplify right side
    4,700.76x = 18,468,825.41
  5. Step 5: Solve for x
    x = 18,468,825.41/4,700.76
  6. Step 6: Final answer
    x = 3,928.90

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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.