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Finding the Fourth Proportional to 18,416.64, 25,415.24 and 10,033.12

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Solution

The fourth proportional to 18,416.64, 25,415.24 and 10,033.12 is: 13,845.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,416.64 : 25,415.24 = 10,033.12 : x
  2. Step 2: Convert to fraction form
    18,416.64/25,415.24 = 10,033.12/x
  3. Step 3: Cross multiply
    18,416.64x = 25,415.24 × 10,033.12
  4. Step 4: Simplify right side
    18,416.64x = 254,994,152.75
  5. Step 5: Solve for x
    x = 254,994,152.75/18,416.64
  6. Step 6: Final answer
    x = 13,845.86

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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.