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Finding the Fourth Proportional to 11,653.13, 16,082.01 and 8,776.79

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Solution

The fourth proportional to 11,653.13, 16,082.01 and 8,776.79 is: 12,112.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,653.13 : 16,082.01 = 8,776.79 : x
  2. Step 2: Convert to fraction form
    11,653.13/16,082.01 = 8,776.79/x
  3. Step 3: Cross multiply
    11,653.13x = 16,082.01 × 8,776.79
  4. Step 4: Simplify right side
    11,653.13x = 141,148,404.45
  5. Step 5: Solve for x
    x = 141,148,404.45/11,653.13
  6. Step 6: Final answer
    x = 12,112.49

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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.