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Finding the Fourth Proportional to 11,447.63, 15,797.52 and 6,411.80

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Solution

The fourth proportional to 11,447.63, 15,797.52 and 6,411.80 is: 8,848.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,447.63 : 15,797.52 = 6,411.80 : x
  2. Step 2: Convert to fraction form
    11,447.63/15,797.52 = 6,411.80/x
  3. Step 3: Cross multiply
    11,447.63x = 15,797.52 × 6,411.80
  4. Step 4: Simplify right side
    11,447.63x = 101,290,459.75
  5. Step 5: Solve for x
    x = 101,290,459.75/11,447.63
  6. Step 6: Final answer
    x = 8,848.16

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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.