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Finding the Fourth Proportional to 12,459.84, 17,183.52 and 12,397.80

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Solution

The fourth proportional to 12,459.84, 17,183.52 and 12,397.80 is: 17,097.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459.84 : 17,183.52 = 12,397.80 : x
  2. Step 2: Convert to fraction form
    12,459.84/17,183.52 = 12,397.80/x
  3. Step 3: Cross multiply
    12,459.84x = 17,183.52 × 12,397.80
  4. Step 4: Simplify right side
    12,459.84x = 213,037,844.26
  5. Step 5: Solve for x
    x = 213,037,844.26/12,459.84
  6. Step 6: Final answer
    x = 17,097.96

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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.