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Finding the Fourth Proportional to 2,916.15, 4,372.80 and 967.70

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Solution

The fourth proportional to 2,916.15, 4,372.80 and 967.70 is: 1,451.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916.15 : 4,372.80 = 967.70 : x
  2. Step 2: Convert to fraction form
    2,916.15/4,372.80 = 967.70/x
  3. Step 3: Cross multiply
    2,916.15x = 4,372.80 × 967.70
  4. Step 4: Simplify right side
    2,916.15x = 4,231,536.70
  5. Step 5: Solve for x
    x = 4,231,536.70/2,916.15
  6. Step 6: Final answer
    x = 1,451.07

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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.