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Finding the Fourth Proportional to 45,720.88, 68,580.84 and 34,695.30

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Solution

The fourth proportional to 45,720.88, 68,580.84 and 34,695.30 is: 52,042.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,720.88 : 68,580.84 = 34,695.30 : x
  2. Step 2: Convert to fraction form
    45,720.88/68,580.84 = 34,695.30/x
  3. Step 3: Cross multiply
    45,720.88x = 68,580.84 × 34,695.30
  4. Step 4: Simplify right side
    45,720.88x = 2,379,432,818.05
  5. Step 5: Solve for x
    x = 2,379,432,818.05/45,720.88
  6. Step 6: Final answer
    x = 52,042.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.