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Finding the Fourth Proportional to 11,831.18, 17,748.18 and 4,809.69

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Solution

The fourth proportional to 11,831.18, 17,748.18 and 4,809.69 is: 7,215.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,831.18 : 17,748.18 = 4,809.69 : x
  2. Step 2: Convert to fraction form
    11,831.18/17,748.18 = 4,809.69/x
  3. Step 3: Cross multiply
    11,831.18x = 17,748.18 × 4,809.69
  4. Step 4: Simplify right side
    11,831.18x = 85,363,243.86
  5. Step 5: Solve for x
    x = 85,363,243.86/11,831.18
  6. Step 6: Final answer
    x = 7,215.11

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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.