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Finding the Fourth Proportional to 7,711.50, 11,567.79 and 3,094.50

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Solution

The fourth proportional to 7,711.50, 11,567.79 and 3,094.50 is: 4,641.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,711.50 : 11,567.79 = 3,094.50 : x
  2. Step 2: Convert to fraction form
    7,711.50/11,567.79 = 3,094.50/x
  3. Step 3: Cross multiply
    7,711.50x = 11,567.79 × 3,094.50
  4. Step 4: Simplify right side
    7,711.50x = 35,796,526.16
  5. Step 5: Solve for x
    x = 35,796,526.16/7,711.50
  6. Step 6: Final answer
    x = 4,641.97

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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.