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Finding the Fourth Proportional to 8,625.79, 12,941.88 and 3,699.28

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Solution

The fourth proportional to 8,625.79, 12,941.88 and 3,699.28 is: 5,550.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.79 : 12,941.88 = 3,699.28 : x
  2. Step 2: Convert to fraction form
    8,625.79/12,941.88 = 3,699.28/x
  3. Step 3: Cross multiply
    8,625.79x = 12,941.88 × 3,699.28
  4. Step 4: Simplify right side
    8,625.79x = 47,875,637.85
  5. Step 5: Solve for x
    x = 47,875,637.85/8,625.79
  6. Step 6: Final answer
    x = 5,550.29

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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.