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Finding the Fourth Proportional to 18,602.64, 25,661.42 and 11,784.18

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Solution

The fourth proportional to 18,602.64, 25,661.42 and 11,784.18 is: 16,255.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,602.64 : 25,661.42 = 11,784.18 : x
  2. Step 2: Convert to fraction form
    18,602.64/25,661.42 = 11,784.18/x
  3. Step 3: Cross multiply
    18,602.64x = 25,661.42 × 11,784.18
  4. Step 4: Simplify right side
    18,602.64x = 302,398,673.89
  5. Step 5: Solve for x
    x = 302,398,673.89/18,602.64
  6. Step 6: Final answer
    x = 16,255.68

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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.