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Finding the Fourth Proportional to 58,492.98, 80,720.42 and 31,635.54

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Solution

The fourth proportional to 58,492.98, 80,720.42 and 31,635.54 is: 43,657.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,492.98 : 80,720.42 = 31,635.54 : x
  2. Step 2: Convert to fraction form
    58,492.98/80,720.42 = 31,635.54/x
  3. Step 3: Cross multiply
    58,492.98x = 80,720.42 × 31,635.54
  4. Step 4: Simplify right side
    58,492.98x = 2,553,633,917.55
  5. Step 5: Solve for x
    x = 2,553,633,917.55/58,492.98
  6. Step 6: Final answer
    x = 43,657.10

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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.