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Finding the Fourth Proportional to 63,638.50, 87,821.16 and 35,344.42

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Solution

The fourth proportional to 63,638.50, 87,821.16 and 35,344.42 is: 48,775.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,638.50 : 87,821.16 = 35,344.42 : x
  2. Step 2: Convert to fraction form
    63,638.50/87,821.16 = 35,344.42/x
  3. Step 3: Cross multiply
    63,638.50x = 87,821.16 × 35,344.42
  4. Step 4: Simplify right side
    63,638.50x = 3,103,987,963.93
  5. Step 5: Solve for x
    x = 3,103,987,963.93/63,638.50
  6. Step 6: Final answer
    x = 48,775.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.