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Finding the Fourth Proportional to 8,547.14, 12,778.55 and 7,245.41

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Solution

The fourth proportional to 8,547.14, 12,778.55 and 7,245.41 is: 10,832.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,547.14 : 12,778.55 = 7,245.41 : x
  2. Step 2: Convert to fraction form
    8,547.14/12,778.55 = 7,245.41/x
  3. Step 3: Cross multiply
    8,547.14x = 12,778.55 × 7,245.41
  4. Step 4: Simplify right side
    8,547.14x = 92,585,884.02
  5. Step 5: Solve for x
    x = 92,585,884.02/8,547.14
  6. Step 6: Final answer
    x = 10,832.39

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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.