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Finding the Fourth Proportional to 18,392.64, 25,380.93 and 10,434.69

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Solution

The fourth proportional to 18,392.64, 25,380.93 and 10,434.69 is: 14,399.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,392.64 : 25,380.93 = 10,434.69 : x
  2. Step 2: Convert to fraction form
    18,392.64/25,380.93 = 10,434.69/x
  3. Step 3: Cross multiply
    18,392.64x = 25,380.93 × 10,434.69
  4. Step 4: Simplify right side
    18,392.64x = 264,842,136.46
  5. Step 5: Solve for x
    x = 264,842,136.46/18,392.64
  6. Step 6: Final answer
    x = 14,399.35

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Half scale
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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.