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Finding the Fourth Proportional to 3,303.75, 4,955.76 and 995.25

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Solution

The fourth proportional to 3,303.75, 4,955.76 and 995.25 is: 1,492.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,303.75 : 4,955.76 = 995.25 : x
  2. Step 2: Convert to fraction form
    3,303.75/4,955.76 = 995.25/x
  3. Step 3: Cross multiply
    3,303.75x = 4,955.76 × 995.25
  4. Step 4: Simplify right side
    3,303.75x = 4,932,220.14
  5. Step 5: Solve for x
    x = 4,932,220.14/3,303.75
  6. Step 6: Final answer
    x = 1,492.92

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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.