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Finding the Fourth Proportional to 43,512.90, 65,276.55 and 18,564.90

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Solution

The fourth proportional to 43,512.90, 65,276.55 and 18,564.90 is: 27,850.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,512.90 : 65,276.55 = 18,564.90 : x
  2. Step 2: Convert to fraction form
    43,512.90/65,276.55 = 18,564.90/x
  3. Step 3: Cross multiply
    43,512.90x = 65,276.55 × 18,564.90
  4. Step 4: Simplify right side
    43,512.90x = 1,211,852,623.10
  5. Step 5: Solve for x
    x = 1,211,852,623.10/43,512.90
  6. Step 6: Final answer
    x = 27,850.42

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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.