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Finding the Fourth Proportional to 3,231.76, 4,459.04 and 1,904.48

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Solution

The fourth proportional to 3,231.76, 4,459.04 and 1,904.48 is: 2,627.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,231.76 : 4,459.04 = 1,904.48 : x
  2. Step 2: Convert to fraction form
    3,231.76/4,459.04 = 1,904.48/x
  3. Step 3: Cross multiply
    3,231.76x = 4,459.04 × 1,904.48
  4. Step 4: Simplify right side
    3,231.76x = 8,492,152.50
  5. Step 5: Solve for x
    x = 8,492,152.50/3,231.76
  6. Step 6: Final answer
    x = 2,627.72

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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.