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Finding the Fourth Proportional to 11,453.95, 15,814.07 and 8,796.61

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Solution

The fourth proportional to 11,453.95, 15,814.07 and 8,796.61 is: 12,145.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,453.95 : 15,814.07 = 8,796.61 : x
  2. Step 2: Convert to fraction form
    11,453.95/15,814.07 = 8,796.61/x
  3. Step 3: Cross multiply
    11,453.95x = 15,814.07 × 8,796.61
  4. Step 4: Simplify right side
    11,453.95x = 139,110,206.30
  5. Step 5: Solve for x
    x = 139,110,206.30/11,453.95
  6. Step 6: Final answer
    x = 12,145.17

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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.