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Finding the Fourth Proportional to 14,889.88, 20,546.58 and 8,602.12

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Solution

The fourth proportional to 14,889.88, 20,546.58 and 8,602.12 is: 11,870.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,889.88 : 20,546.58 = 8,602.12 : x
  2. Step 2: Convert to fraction form
    14,889.88/20,546.58 = 8,602.12/x
  3. Step 3: Cross multiply
    14,889.88x = 20,546.58 × 8,602.12
  4. Step 4: Simplify right side
    14,889.88x = 176,744,146.75
  5. Step 5: Solve for x
    x = 176,744,146.75/14,889.88
  6. Step 6: Final answer
    x = 11,870.09

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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.