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Finding the Fourth Proportional to 5,430.88, 7,494.96 and 3,772

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Solution

The fourth proportional to 5,430.88, 7,494.96 and 3,772 is: 5,205.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.88 : 7,494.96 = 3,772 : x
  2. Step 2: Convert to fraction form
    5,430.88/7,494.96 = 3,772/x
  3. Step 3: Cross multiply
    5,430.88x = 7,494.96 × 3,772
  4. Step 4: Simplify right side
    5,430.88x = 28,270,989.12
  5. Step 5: Solve for x
    x = 28,270,989.12/5,430.88
  6. Step 6: Final answer
    x = 5,205.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.