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Finding the Fourth Proportional to 2,309.76, 3,464.70 and 847.96

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Solution

The fourth proportional to 2,309.76, 3,464.70 and 847.96 is: 1,271.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.76 : 3,464.70 = 847.96 : x
  2. Step 2: Convert to fraction form
    2,309.76/3,464.70 = 847.96/x
  3. Step 3: Cross multiply
    2,309.76x = 3,464.70 × 847.96
  4. Step 4: Simplify right side
    2,309.76x = 2,937,927.01
  5. Step 5: Solve for x
    x = 2,937,927.01/2,309.76
  6. Step 6: Final answer
    x = 1,271.96

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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.