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Finding the Fourth Proportional to 4,620.71, 6,931.02 and 1,157.96

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Solution

The fourth proportional to 4,620.71, 6,931.02 and 1,157.96 is: 1,736.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,620.71 : 6,931.02 = 1,157.96 : x
  2. Step 2: Convert to fraction form
    4,620.71/6,931.02 = 1,157.96/x
  3. Step 3: Cross multiply
    4,620.71x = 6,931.02 × 1,157.96
  4. Step 4: Simplify right side
    4,620.71x = 8,025,843.92
  5. Step 5: Solve for x
    x = 8,025,843.92/4,620.71
  6. Step 6: Final answer
    x = 1,736.93

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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.