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Finding the Fourth Proportional to 8,308.99, 11,467.65 and 5,328.19

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Solution

The fourth proportional to 8,308.99, 11,467.65 and 5,328.19 is: 7,353.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,308.99 : 11,467.65 = 5,328.19 : x
  2. Step 2: Convert to fraction form
    8,308.99/11,467.65 = 5,328.19/x
  3. Step 3: Cross multiply
    8,308.99x = 11,467.65 × 5,328.19
  4. Step 4: Simplify right side
    8,308.99x = 61,101,818.05
  5. Step 5: Solve for x
    x = 61,101,818.05/8,308.99
  6. Step 6: Final answer
    x = 7,353.70

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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.