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Finding the Fourth Proportional to 15,063.13, 20,785.41 and 8,347.08

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Solution

The fourth proportional to 15,063.13, 20,785.41 and 8,347.08 is: 11,518.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,063.13 : 20,785.41 = 8,347.08 : x
  2. Step 2: Convert to fraction form
    15,063.13/20,785.41 = 8,347.08/x
  3. Step 3: Cross multiply
    15,063.13x = 20,785.41 × 8,347.08
  4. Step 4: Simplify right side
    15,063.13x = 173,497,558.05
  5. Step 5: Solve for x
    x = 173,497,558.05/15,063.13
  6. Step 6: Final answer
    x = 11,518.03

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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.