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Finding the Fourth Proportional to 5,673.98, 7,829.98 and 3,156.04

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Solution

The fourth proportional to 5,673.98, 7,829.98 and 3,156.04 is: 4,355.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,673.98 : 7,829.98 = 3,156.04 : x
  2. Step 2: Convert to fraction form
    5,673.98/7,829.98 = 3,156.04/x
  3. Step 3: Cross multiply
    5,673.98x = 7,829.98 × 3,156.04
  4. Step 4: Simplify right side
    5,673.98x = 24,711,732.13
  5. Step 5: Solve for x
    x = 24,711,732.13/5,673.98
  6. Step 6: Final answer
    x = 4,355.27

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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.