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Finding the Fourth Proportional to 43,630.92, 65,452.46 and 21,445.16

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Solution

The fourth proportional to 43,630.92, 65,452.46 and 21,445.16 is: 32,170.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,630.92 : 65,452.46 = 21,445.16 : x
  2. Step 2: Convert to fraction form
    43,630.92/65,452.46 = 21,445.16/x
  3. Step 3: Cross multiply
    43,630.92x = 65,452.46 × 21,445.16
  4. Step 4: Simplify right side
    43,630.92x = 1,403,638,042.61
  5. Step 5: Solve for x
    x = 1,403,638,042.61/43,630.92
  6. Step 6: Final answer
    x = 32,170.72

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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.