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Finding the Fourth Proportional to 4,672.02, 7,008.06 and 1,209

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Solution

The fourth proportional to 4,672.02, 7,008.06 and 1,209 is: 1,813.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,672.02 : 7,008.06 = 1,209 : x
  2. Step 2: Convert to fraction form
    4,672.02/7,008.06 = 1,209/x
  3. Step 3: Cross multiply
    4,672.02x = 7,008.06 × 1,209
  4. Step 4: Simplify right side
    4,672.02x = 8,472,744.54
  5. Step 5: Solve for x
    x = 8,472,744.54/4,672.02
  6. Step 6: Final answer
    x = 1,813.51

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.