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Finding the Fourth Proportional to 63,438.78, 87,541.74 and 34,752.70

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Solution

The fourth proportional to 63,438.78, 87,541.74 and 34,752.70 is: 47,956.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,438.78 : 87,541.74 = 34,752.70 : x
  2. Step 2: Convert to fraction form
    63,438.78/87,541.74 = 34,752.70/x
  3. Step 3: Cross multiply
    63,438.78x = 87,541.74 × 34,752.70
  4. Step 4: Simplify right side
    63,438.78x = 3,042,311,827.70
  5. Step 5: Solve for x
    x = 3,042,311,827.70/63,438.78
  6. Step 6: Final answer
    x = 47,956.66

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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.