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Finding the Fourth Proportional to 3,332.66, 4,999 and 3,129.68

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Solution

The fourth proportional to 3,332.66, 4,999 and 3,129.68 is: 4,694.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,332.66 : 4,999 = 3,129.68 : x
  2. Step 2: Convert to fraction form
    3,332.66/4,999 = 3,129.68/x
  3. Step 3: Cross multiply
    3,332.66x = 4,999 × 3,129.68
  4. Step 4: Simplify right side
    3,332.66x = 15,645,270.32
  5. Step 5: Solve for x
    x = 15,645,270.32/3,332.66
  6. Step 6: Final answer
    x = 4,694.53

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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.