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Finding the Fourth Proportional to 5,472.60, 8,218.80 and 4,792.20

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Solution

The fourth proportional to 5,472.60, 8,218.80 and 4,792.20 is: 7,196.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,472.60 : 8,218.80 = 4,792.20 : x
  2. Step 2: Convert to fraction form
    5,472.60/8,218.80 = 4,792.20/x
  3. Step 3: Cross multiply
    5,472.60x = 8,218.80 × 4,792.20
  4. Step 4: Simplify right side
    5,472.60x = 39,386,133.36
  5. Step 5: Solve for x
    x = 39,386,133.36/5,472.60
  6. Step 6: Final answer
    x = 7,196.97

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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.