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Finding the Fourth Proportional to 3,336.96, 5,005.50 and 871.63

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Solution

The fourth proportional to 3,336.96, 5,005.50 and 871.63 is: 1,307.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,336.96 : 5,005.50 = 871.63 : x
  2. Step 2: Convert to fraction form
    3,336.96/5,005.50 = 871.63/x
  3. Step 3: Cross multiply
    3,336.96x = 5,005.50 × 871.63
  4. Step 4: Simplify right side
    3,336.96x = 4,362,943.97
  5. Step 5: Solve for x
    x = 4,362,943.97/3,336.96
  6. Step 6: Final answer
    x = 1,307.46

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1.5x scale

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.