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Finding the Fourth Proportional to 6,469.71, 8,926.70 and 4,679.81

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Solution

The fourth proportional to 6,469.71, 8,926.70 and 4,679.81 is: 6,457.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,469.71 : 8,926.70 = 4,679.81 : x
  2. Step 2: Convert to fraction form
    6,469.71/8,926.70 = 4,679.81/x
  3. Step 3: Cross multiply
    6,469.71x = 8,926.70 × 4,679.81
  4. Step 4: Simplify right side
    6,469.71x = 41,775,259.93
  5. Step 5: Solve for x
    x = 41,775,259.93/6,469.71
  6. Step 6: Final answer
    x = 6,457.05

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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.