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Finding the Fourth Proportional to 123,900.96, 170,983.98 and 67,312.44

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Solution

The fourth proportional to 123,900.96, 170,983.98 and 67,312.44 is: 92,891.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,900.96 : 170,983.98 = 67,312.44 : x
  2. Step 2: Convert to fraction form
    123,900.96/170,983.98 = 67,312.44/x
  3. Step 3: Cross multiply
    123,900.96x = 170,983.98 × 67,312.44
  4. Step 4: Simplify right side
    123,900.96x = 11,509,348,894.71
  5. Step 5: Solve for x
    x = 11,509,348,894.71/123,900.96
  6. Step 6: Final answer
    x = 92,891.52

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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.