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Finding the Fourth Proportional to 8,711.94, 13,061.18 and 4,326

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Solution

The fourth proportional to 8,711.94, 13,061.18 and 4,326 is: 6,485.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,711.94 : 13,061.18 = 4,326 : x
  2. Step 2: Convert to fraction form
    8,711.94/13,061.18 = 4,326/x
  3. Step 3: Cross multiply
    8,711.94x = 13,061.18 × 4,326
  4. Step 4: Simplify right side
    8,711.94x = 56,502,664.68
  5. Step 5: Solve for x
    x = 56,502,664.68/8,711.94
  6. Step 6: Final answer
    x = 6,485.66

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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.