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Finding the Fourth Proportional to 7,404.40, 11,117.40 and 5,222.80

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Solution

The fourth proportional to 7,404.40, 11,117.40 and 5,222.80 is: 7,841.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,404.40 : 11,117.40 = 5,222.80 : x
  2. Step 2: Convert to fraction form
    7,404.40/11,117.40 = 5,222.80/x
  3. Step 3: Cross multiply
    7,404.40x = 11,117.40 × 5,222.80
  4. Step 4: Simplify right side
    7,404.40x = 58,063,956.72
  5. Step 5: Solve for x
    x = 58,063,956.72/7,404.40
  6. Step 6: Final answer
    x = 7,841.82

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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.