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Finding the Fourth Proportional to 8,449.10, 12,673.65 and 7,477.10

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Solution

The fourth proportional to 8,449.10, 12,673.65 and 7,477.10 is: 11,215.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,449.10 : 12,673.65 = 7,477.10 : x
  2. Step 2: Convert to fraction form
    8,449.10/12,673.65 = 7,477.10/x
  3. Step 3: Cross multiply
    8,449.10x = 12,673.65 × 7,477.10
  4. Step 4: Simplify right side
    8,449.10x = 94,762,148.42
  5. Step 5: Solve for x
    x = 94,762,148.42/8,449.10
  6. Step 6: Final answer
    x = 11,215.65

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Half scale
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Double scale
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Similar ratio
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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.