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Finding the Fourth Proportional to 14,940.51, 20,616.71 and 8,653.29

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Solution

The fourth proportional to 14,940.51, 20,616.71 and 8,653.29 is: 11,940.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,940.51 : 20,616.71 = 8,653.29 : x
  2. Step 2: Convert to fraction form
    14,940.51/20,616.71 = 8,653.29/x
  3. Step 3: Cross multiply
    14,940.51x = 20,616.71 × 8,653.29
  4. Step 4: Simplify right side
    14,940.51x = 178,402,327.21
  5. Step 5: Solve for x
    x = 178,402,327.21/14,940.51
  6. Step 6: Final answer
    x = 11,940.85

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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.