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Finding the Fourth Proportional to 58,797.72, 81,137.46 and 34,909.20

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Solution

The fourth proportional to 58,797.72, 81,137.46 and 34,909.20 is: 48,172.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,797.72 : 81,137.46 = 34,909.20 : x
  2. Step 2: Convert to fraction form
    58,797.72/81,137.46 = 34,909.20/x
  3. Step 3: Cross multiply
    58,797.72x = 81,137.46 × 34,909.20
  4. Step 4: Simplify right side
    58,797.72x = 2,832,443,818.63
  5. Step 5: Solve for x
    x = 2,832,443,818.63/58,797.72
  6. Step 6: Final answer
    x = 48,172.68

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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.