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Finding the Fourth Proportional to 18,349.59, 25,322.44 and 9,966.09

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Solution

The fourth proportional to 18,349.59, 25,322.44 and 9,966.09 is: 13,753.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,349.59 : 25,322.44 = 9,966.09 : x
  2. Step 2: Convert to fraction form
    18,349.59/25,322.44 = 9,966.09/x
  3. Step 3: Cross multiply
    18,349.59x = 25,322.44 × 9,966.09
  4. Step 4: Simplify right side
    18,349.59x = 252,365,804.79
  5. Step 5: Solve for x
    x = 252,365,804.79/18,349.59
  6. Step 6: Final answer
    x = 13,753.21

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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.