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Finding the Fourth Proportional to 58,729.30, 81,031.09 and 34,861.30

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Solution

The fourth proportional to 58,729.30, 81,031.09 and 34,861.30 is: 48,099.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,729.30 : 81,031.09 = 34,861.30 : x
  2. Step 2: Convert to fraction form
    58,729.30/81,031.09 = 34,861.30/x
  3. Step 3: Cross multiply
    58,729.30x = 81,031.09 × 34,861.30
  4. Step 4: Simplify right side
    58,729.30x = 2,824,849,137.82
  5. Step 5: Solve for x
    x = 2,824,849,137.82/58,729.30
  6. Step 6: Final answer
    x = 48,099.49

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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.