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Finding the Fourth Proportional to 5,165.38, 7,748.53 and 1,655.48

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Solution

The fourth proportional to 5,165.38, 7,748.53 and 1,655.48 is: 2,483.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,165.38 : 7,748.53 = 1,655.48 : x
  2. Step 2: Convert to fraction form
    5,165.38/7,748.53 = 1,655.48/x
  3. Step 3: Cross multiply
    5,165.38x = 7,748.53 × 1,655.48
  4. Step 4: Simplify right side
    5,165.38x = 12,827,536.44
  5. Step 5: Solve for x
    x = 12,827,536.44/5,165.38
  6. Step 6: Final answer
    x = 2,483.37

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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.