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Finding the Fourth Proportional to 5,223.65, 7,829.96 and 1,712.74

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Solution

The fourth proportional to 5,223.65, 7,829.96 and 1,712.74 is: 2,567.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,223.65 : 7,829.96 = 1,712.74 : x
  2. Step 2: Convert to fraction form
    5,223.65/7,829.96 = 1,712.74/x
  3. Step 3: Cross multiply
    5,223.65x = 7,829.96 × 1,712.74
  4. Step 4: Simplify right side
    5,223.65x = 13,410,655.72
  5. Step 5: Solve for x
    x = 13,410,655.72/5,223.65
  6. Step 6: Final answer
    x = 2,567.30

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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.