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Finding the Fourth Proportional to 4,831.28, 7,248.12 and 1,368.56

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Solution

The fourth proportional to 4,831.28, 7,248.12 and 1,368.56 is: 2,053.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,831.28 : 7,248.12 = 1,368.56 : x
  2. Step 2: Convert to fraction form
    4,831.28/7,248.12 = 1,368.56/x
  3. Step 3: Cross multiply
    4,831.28x = 7,248.12 × 1,368.56
  4. Step 4: Simplify right side
    4,831.28x = 9,919,487.11
  5. Step 5: Solve for x
    x = 9,919,487.11/4,831.28
  6. Step 6: Final answer
    x = 2,053.18

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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.