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Finding the Fourth Proportional to 5,615.75, 8,425.80 and 2,328

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Solution

The fourth proportional to 5,615.75, 8,425.80 and 2,328 is: 3,492.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.75 : 8,425.80 = 2,328 : x
  2. Step 2: Convert to fraction form
    5,615.75/8,425.80 = 2,328/x
  3. Step 3: Cross multiply
    5,615.75x = 8,425.80 × 2,328
  4. Step 4: Simplify right side
    5,615.75x = 19,615,262.40
  5. Step 5: Solve for x
    x = 19,615,262.40/5,615.75
  6. Step 6: Final answer
    x = 3,492.90

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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.