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Finding the Fourth Proportional to 12,459.94, 18,665.92 and 9,813.44

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Solution

The fourth proportional to 12,459.94, 18,665.92 and 9,813.44 is: 14,701.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459.94 : 18,665.92 = 9,813.44 : x
  2. Step 2: Convert to fraction form
    12,459.94/18,665.92 = 9,813.44/x
  3. Step 3: Cross multiply
    12,459.94x = 18,665.92 × 9,813.44
  4. Step 4: Simplify right side
    12,459.94x = 183,176,944.90
  5. Step 5: Solve for x
    x = 183,176,944.90/12,459.94
  6. Step 6: Final answer
    x = 14,701.27

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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.