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Finding the Fourth Proportional to 63,672.30, 87,843.90 and 39,462.21

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Solution

The fourth proportional to 63,672.30, 87,843.90 and 39,462.21 is: 54,443.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,672.30 : 87,843.90 = 39,462.21 : x
  2. Step 2: Convert to fraction form
    63,672.30/87,843.90 = 39,462.21/x
  3. Step 3: Cross multiply
    63,672.30x = 87,843.90 × 39,462.21
  4. Step 4: Simplify right side
    63,672.30x = 3,466,514,429.02
  5. Step 5: Solve for x
    x = 3,466,514,429.02/63,672.30
  6. Step 6: Final answer
    x = 54,443.05

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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.