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Finding the Fourth Proportional to 7,994.86, 11,040.51 and 7,558.54

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Solution

The fourth proportional to 7,994.86, 11,040.51 and 7,558.54 is: 10,437.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,994.86 : 11,040.51 = 7,558.54 : x
  2. Step 2: Convert to fraction form
    7,994.86/11,040.51 = 7,558.54/x
  3. Step 3: Cross multiply
    7,994.86x = 11,040.51 × 7,558.54
  4. Step 4: Simplify right side
    7,994.86x = 83,450,136.46
  5. Step 5: Solve for x
    x = 83,450,136.46/7,994.86
  6. Step 6: Final answer
    x = 10,437.97

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1.5x scale

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.