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Finding the Fourth Proportional to 63,439.40, 87,551.72 and 35,147.72

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Solution

The fourth proportional to 63,439.40, 87,551.72 and 35,147.72 is: 48,506.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,439.40 : 87,551.72 = 35,147.72 : x
  2. Step 2: Convert to fraction form
    63,439.40/87,551.72 = 35,147.72/x
  3. Step 3: Cross multiply
    63,439.40x = 87,551.72 × 35,147.72
  4. Step 4: Simplify right side
    63,439.40x = 3,077,243,340.08
  5. Step 5: Solve for x
    x = 3,077,243,340.08/63,439.40
  6. Step 6: Final answer
    x = 48,506.82

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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.