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Finding the Fourth Proportional to 11,618.72, 16,035.20 and 6,903

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Solution

The fourth proportional to 11,618.72, 16,035.20 and 6,903 is: 9,526.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,618.72 : 16,035.20 = 6,903 : x
  2. Step 2: Convert to fraction form
    11,618.72/16,035.20 = 6,903/x
  3. Step 3: Cross multiply
    11,618.72x = 16,035.20 × 6,903
  4. Step 4: Simplify right side
    11,618.72x = 110,690,985.60
  5. Step 5: Solve for x
    x = 110,690,985.60/11,618.72
  6. Step 6: Final answer
    x = 9,526.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.