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Finding the Fourth Proportional to 4,783.76, 7,175.10 and 1,663.24

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Solution

The fourth proportional to 4,783.76, 7,175.10 and 1,663.24 is: 2,494.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,783.76 : 7,175.10 = 1,663.24 : x
  2. Step 2: Convert to fraction form
    4,783.76/7,175.10 = 1,663.24/x
  3. Step 3: Cross multiply
    4,783.76x = 7,175.10 × 1,663.24
  4. Step 4: Simplify right side
    4,783.76x = 11,933,913.32
  5. Step 5: Solve for x
    x = 11,933,913.32/4,783.76
  6. Step 6: Final answer
    x = 2,494.67

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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.