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Finding the Fourth Proportional to 7,393.89, 11,130.76 and 6,739.95

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Solution

The fourth proportional to 7,393.89, 11,130.76 and 6,739.95 is: 10,146.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,393.89 : 11,130.76 = 6,739.95 : x
  2. Step 2: Convert to fraction form
    7,393.89/11,130.76 = 6,739.95/x
  3. Step 3: Cross multiply
    7,393.89x = 11,130.76 × 6,739.95
  4. Step 4: Simplify right side
    7,393.89x = 75,020,765.86
  5. Step 5: Solve for x
    x = 75,020,765.86/7,393.89
  6. Step 6: Final answer
    x = 10,146.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.