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Finding the Fourth Proportional to 105,757.54, 145,949.50 and 58,012.90

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Solution

The fourth proportional to 105,757.54, 145,949.50 and 58,012.90 is: 80,060.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,757.54 : 145,949.50 = 58,012.90 : x
  2. Step 2: Convert to fraction form
    105,757.54/145,949.50 = 58,012.90/x
  3. Step 3: Cross multiply
    105,757.54x = 145,949.50 × 58,012.90
  4. Step 4: Simplify right side
    105,757.54x = 8,466,953,748.55
  5. Step 5: Solve for x
    x = 8,466,953,748.55/105,757.54
  6. Step 6: Final answer
    x = 80,060.05

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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.