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Finding the Fourth Proportional to 18,886.98, 26,060.76 and 10,928.73

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Solution

The fourth proportional to 18,886.98, 26,060.76 and 10,928.73 is: 15,079.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.98 : 26,060.76 = 10,928.73 : x
  2. Step 2: Convert to fraction form
    18,886.98/26,060.76 = 10,928.73/x
  3. Step 3: Cross multiply
    18,886.98x = 26,060.76 × 10,928.73
  4. Step 4: Simplify right side
    18,886.98x = 284,811,009.63
  5. Step 5: Solve for x
    x = 284,811,009.63/18,886.98
  6. Step 6: Final answer
    x = 15,079.75

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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.