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Finding the Fourth Proportional to 10,916.60, 16,374.90 and 7,460.60

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Solution

The fourth proportional to 10,916.60, 16,374.90 and 7,460.60 is: 11,190.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,916.60 : 16,374.90 = 7,460.60 : x
  2. Step 2: Convert to fraction form
    10,916.60/16,374.90 = 7,460.60/x
  3. Step 3: Cross multiply
    10,916.60x = 16,374.90 × 7,460.60
  4. Step 4: Simplify right side
    10,916.60x = 122,166,578.94
  5. Step 5: Solve for x
    x = 122,166,578.94/10,916.60
  6. Step 6: Final answer
    x = 11,190.90

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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.