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Finding the Fourth Proportional to 2,916.72, 4,373.64 and 1,066.44

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Solution

The fourth proportional to 2,916.72, 4,373.64 and 1,066.44 is: 1,599.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916.72 : 4,373.64 = 1,066.44 : x
  2. Step 2: Convert to fraction form
    2,916.72/4,373.64 = 1,066.44/x
  3. Step 3: Cross multiply
    2,916.72x = 4,373.64 × 1,066.44
  4. Step 4: Simplify right side
    2,916.72x = 4,664,224.64
  5. Step 5: Solve for x
    x = 4,664,224.64/2,916.72
  6. Step 6: Final answer
    x = 1,599.13

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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.