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Finding the Fourth Proportional to 12,636.61, 18,957.34 and 4,844.81

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Solution

The fourth proportional to 12,636.61, 18,957.34 and 4,844.81 is: 7,268.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.61 : 18,957.34 = 4,844.81 : x
  2. Step 2: Convert to fraction form
    12,636.61/18,957.34 = 4,844.81/x
  3. Step 3: Cross multiply
    12,636.61x = 18,957.34 × 4,844.81
  4. Step 4: Simplify right side
    12,636.61x = 91,844,763.85
  5. Step 5: Solve for x
    x = 91,844,763.85/12,636.61
  6. Step 6: Final answer
    x = 7,268.15

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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.