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Finding the Fourth Proportional to 5,287.66, 7,290.05 and 4,549.55

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Solution

The fourth proportional to 5,287.66, 7,290.05 and 4,549.55 is: 6,272.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.66 : 7,290.05 = 4,549.55 : x
  2. Step 2: Convert to fraction form
    5,287.66/7,290.05 = 4,549.55/x
  3. Step 3: Cross multiply
    5,287.66x = 7,290.05 × 4,549.55
  4. Step 4: Simplify right side
    5,287.66x = 33,166,421.90
  5. Step 5: Solve for x
    x = 33,166,421.90/5,287.66
  6. Step 6: Final answer
    x = 6,272.42

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