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Finding the Fourth Proportional to 18,349.74, 25,322.77 and 9,966.24

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Solution

The fourth proportional to 18,349.74, 25,322.77 and 9,966.24 is: 13,753.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,349.74 : 25,322.77 = 9,966.24 : x
  2. Step 2: Convert to fraction form
    18,349.74/25,322.77 = 9,966.24/x
  3. Step 3: Cross multiply
    18,349.74x = 25,322.77 × 9,966.24
  4. Step 4: Simplify right side
    18,349.74x = 252,372,690.15
  5. Step 5: Solve for x
    x = 252,372,690.15/18,349.74
  6. Step 6: Final answer
    x = 13,753.48

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Half scale
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Double scale
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Similar ratio
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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.