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Finding the Fourth Proportional to 18,842.61, 28,263.92 and 11,047.17

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Solution

The fourth proportional to 18,842.61, 28,263.92 and 11,047.17 is: 16,570.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,842.61 : 28,263.92 = 11,047.17 : x
  2. Step 2: Convert to fraction form
    18,842.61/28,263.92 = 11,047.17/x
  3. Step 3: Cross multiply
    18,842.61x = 28,263.92 × 11,047.17
  4. Step 4: Simplify right side
    18,842.61x = 312,236,273.87
  5. Step 5: Solve for x
    x = 312,236,273.87/18,842.61
  6. Step 6: Final answer
    x = 16,570.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.