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Finding the Fourth Proportional to 11,681.87, 17,522.60 and 2,916.68

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Solution

The fourth proportional to 11,681.87, 17,522.60 and 2,916.68 is: 4,374.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,681.87 : 17,522.60 = 2,916.68 : x
  2. Step 2: Convert to fraction form
    11,681.87/17,522.60 = 2,916.68/x
  3. Step 3: Cross multiply
    11,681.87x = 17,522.60 × 2,916.68
  4. Step 4: Simplify right side
    11,681.87x = 51,107,714.77
  5. Step 5: Solve for x
    x = 51,107,714.77/11,681.87
  6. Step 6: Final answer
    x = 4,374.96

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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.