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Finding the Fourth Proportional to 3,471.60, 5,208.20 and 1,006.45

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Solution

The fourth proportional to 3,471.60, 5,208.20 and 1,006.45 is: 1,509.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,471.60 : 5,208.20 = 1,006.45 : x
  2. Step 2: Convert to fraction form
    3,471.60/5,208.20 = 1,006.45/x
  3. Step 3: Cross multiply
    3,471.60x = 5,208.20 × 1,006.45
  4. Step 4: Simplify right side
    3,471.60x = 5,241,787.86
  5. Step 5: Solve for x
    x = 5,241,787.86/3,471.60
  6. Step 6: Final answer
    x = 1,509.91

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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.