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Finding the Fourth Proportional to 25,796.80, 38,698.80 and 11,005.60

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Solution

The fourth proportional to 25,796.80, 38,698.80 and 11,005.60 is: 16,509.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,796.80 : 38,698.80 = 11,005.60 : x
  2. Step 2: Convert to fraction form
    25,796.80/38,698.80 = 11,005.60/x
  3. Step 3: Cross multiply
    25,796.80x = 38,698.80 × 11,005.60
  4. Step 4: Simplify right side
    25,796.80x = 425,903,513.28
  5. Step 5: Solve for x
    x = 425,903,513.28/25,796.80
  6. Step 6: Final answer
    x = 16,509.94

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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.