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Finding the Fourth Proportional to 13,063.76, 18,027.98 and 7,474.76

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Solution

The fourth proportional to 13,063.76, 18,027.98 and 7,474.76 is: 10,315.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,063.76 : 18,027.98 = 7,474.76 : x
  2. Step 2: Convert to fraction form
    13,063.76/18,027.98 = 7,474.76/x
  3. Step 3: Cross multiply
    13,063.76x = 18,027.98 × 7,474.76
  4. Step 4: Simplify right side
    13,063.76x = 134,754,823.78
  5. Step 5: Solve for x
    x = 134,754,823.78/13,063.76
  6. Step 6: Final answer
    x = 10,315.16

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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.