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Finding the Fourth Proportional to 18,349.60, 25,322.46 and 9,966.10

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Solution

The fourth proportional to 18,349.60, 25,322.46 and 9,966.10 is: 13,753.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,349.60 : 25,322.46 = 9,966.10 : x
  2. Step 2: Convert to fraction form
    18,349.60/25,322.46 = 9,966.10/x
  3. Step 3: Cross multiply
    18,349.60x = 25,322.46 × 9,966.10
  4. Step 4: Simplify right side
    18,349.60x = 252,366,105.30
  5. Step 5: Solve for x
    x = 252,366,105.30/18,349.60
  6. Step 6: Final answer
    x = 13,753.22

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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.