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Finding the Fourth Proportional to 14,891.31, 20,551.89 and 8,602.47

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Solution

The fourth proportional to 14,891.31, 20,551.89 and 8,602.47 is: 11,872.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,891.31 : 20,551.89 = 8,602.47 : x
  2. Step 2: Convert to fraction form
    14,891.31/20,551.89 = 8,602.47/x
  3. Step 3: Cross multiply
    14,891.31x = 20,551.89 × 8,602.47
  4. Step 4: Simplify right side
    14,891.31x = 176,797,017.17
  5. Step 5: Solve for x
    x = 176,797,017.17/14,891.31
  6. Step 6: Final answer
    x = 11,872.50

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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.