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Finding the Fourth Proportional to 1,325.83, 1,988.79 and 676.06

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Solution

The fourth proportional to 1,325.83, 1,988.79 and 676.06 is: 1,014.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.83 : 1,988.79 = 676.06 : x
  2. Step 2: Convert to fraction form
    1,325.83/1,988.79 = 676.06/x
  3. Step 3: Cross multiply
    1,325.83x = 1,988.79 × 676.06
  4. Step 4: Simplify right side
    1,325.83x = 1,344,541.37
  5. Step 5: Solve for x
    x = 1,344,541.37/1,325.83
  6. Step 6: Final answer
    x = 1,014.11

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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.