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Finding the Fourth Proportional to 106,687.10, 147,226.08 and 58,940

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Solution

The fourth proportional to 106,687.10, 147,226.08 and 58,940 is: 81,336.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,687.10 : 147,226.08 = 58,940 : x
  2. Step 2: Convert to fraction form
    106,687.10/147,226.08 = 58,940/x
  3. Step 3: Cross multiply
    106,687.10x = 147,226.08 × 58,940
  4. Step 4: Simplify right side
    106,687.10x = 8,677,505,155.20
  5. Step 5: Solve for x
    x = 8,677,505,155.20/106,687.10
  6. Step 6: Final answer
    x = 81,336.03

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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.