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Finding the Fourth Proportional to 8,531.49, 12,798.32 and 3,336.69

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Solution

The fourth proportional to 8,531.49, 12,798.32 and 3,336.69 is: 5,005.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,531.49 : 12,798.32 = 3,336.69 : x
  2. Step 2: Convert to fraction form
    8,531.49/12,798.32 = 3,336.69/x
  3. Step 3: Cross multiply
    8,531.49x = 12,798.32 × 3,336.69
  4. Step 4: Simplify right side
    8,531.49x = 42,704,009.68
  5. Step 5: Solve for x
    x = 42,704,009.68/8,531.49
  6. Step 6: Final answer
    x = 5,005.46

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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.