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Finding the Fourth Proportional to 104,390.64, 156,584.59 and 25,505.55

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Solution

The fourth proportional to 104,390.64, 156,584.59 and 25,505.55 is: 38,257.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,390.64 : 156,584.59 = 25,505.55 : x
  2. Step 2: Convert to fraction form
    104,390.64/156,584.59 = 25,505.55/x
  3. Step 3: Cross multiply
    104,390.64x = 156,584.59 × 25,505.55
  4. Step 4: Simplify right side
    104,390.64x = 3,993,775,698.01
  5. Step 5: Solve for x
    x = 3,993,775,698.01/104,390.64
  6. Step 6: Final answer
    x = 38,257.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.