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Finding the Fourth Proportional to 18,156.52, 25,060.08 and 11,865.34

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Solution

The fourth proportional to 18,156.52, 25,060.08 and 11,865.34 is: 16,376.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,156.52 : 25,060.08 = 11,865.34 : x
  2. Step 2: Convert to fraction form
    18,156.52/25,060.08 = 11,865.34/x
  3. Step 3: Cross multiply
    18,156.52x = 25,060.08 × 11,865.34
  4. Step 4: Simplify right side
    18,156.52x = 297,346,369.63
  5. Step 5: Solve for x
    x = 297,346,369.63/18,156.52
  6. Step 6: Final answer
    x = 16,376.84

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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.