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Finding the Fourth Proportional to 63,506.75, 87,619.31 and 39,647.24

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Solution

The fourth proportional to 63,506.75, 87,619.31 and 39,647.24 is: 54,700.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,506.75 : 87,619.31 = 39,647.24 : x
  2. Step 2: Convert to fraction form
    63,506.75/87,619.31 = 39,647.24/x
  3. Step 3: Cross multiply
    63,506.75x = 87,619.31 × 39,647.24
  4. Step 4: Simplify right side
    63,506.75x = 3,473,863,812.20
  5. Step 5: Solve for x
    x = 3,473,863,812.20/63,506.75
  6. Step 6: Final answer
    x = 54,700.70

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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.