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Finding the Fourth Proportional to 19,659.20, 29,469.60 and 17,585.60

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Solution

The fourth proportional to 19,659.20, 29,469.60 and 17,585.60 is: 26,361.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,659.20 : 29,469.60 = 17,585.60 : x
  2. Step 2: Convert to fraction form
    19,659.20/29,469.60 = 17,585.60/x
  3. Step 3: Cross multiply
    19,659.20x = 29,469.60 × 17,585.60
  4. Step 4: Simplify right side
    19,659.20x = 518,240,597.76
  5. Step 5: Solve for x
    x = 518,240,597.76/19,659.20
  6. Step 6: Final answer
    x = 26,361.23

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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.