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Finding the Fourth Proportional to 123,482.43, 170,405.51 and 66,893.94

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Solution

The fourth proportional to 123,482.43, 170,405.51 and 66,893.94 is: 92,313.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,482.43 : 170,405.51 = 66,893.94 : x
  2. Step 2: Convert to fraction form
    123,482.43/170,405.51 = 66,893.94/x
  3. Step 3: Cross multiply
    123,482.43x = 170,405.51 × 66,893.94
  4. Step 4: Simplify right side
    123,482.43x = 11,399,095,627.14
  5. Step 5: Solve for x
    x = 11,399,095,627.14/123,482.43
  6. Step 6: Final answer
    x = 92,313.50

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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.