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Finding the Fourth Proportional to 11,886.10, 17,829.15 and 11,205.70

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Solution

The fourth proportional to 11,886.10, 17,829.15 and 11,205.70 is: 16,808.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,886.10 : 17,829.15 = 11,205.70 : x
  2. Step 2: Convert to fraction form
    11,886.10/17,829.15 = 11,205.70/x
  3. Step 3: Cross multiply
    11,886.10x = 17,829.15 × 11,205.70
  4. Step 4: Simplify right side
    11,886.10x = 199,788,106.16
  5. Step 5: Solve for x
    x = 199,788,106.16/11,886.10
  6. Step 6: Final answer
    x = 16,808.55

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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.