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Finding the Fourth Proportional to 7,388.95, 11,079.28 and 5,309.93

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Solution

The fourth proportional to 7,388.95, 11,079.28 and 5,309.93 is: 7,961.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,388.95 : 11,079.28 = 5,309.93 : x
  2. Step 2: Convert to fraction form
    7,388.95/11,079.28 = 5,309.93/x
  3. Step 3: Cross multiply
    7,388.95x = 11,079.28 × 5,309.93
  4. Step 4: Simplify right side
    7,388.95x = 58,830,204.43
  5. Step 5: Solve for x
    x = 58,830,204.43/7,388.95
  6. Step 6: Final answer
    x = 7,961.92

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.