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Finding the Fourth Proportional to 123,548.82, 170,492.79 and 66,958.98

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Solution

The fourth proportional to 123,548.82, 170,492.79 and 66,958.98 is: 92,400.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,548.82 : 170,492.79 = 66,958.98 : x
  2. Step 2: Convert to fraction form
    123,548.82/170,492.79 = 66,958.98/x
  3. Step 3: Cross multiply
    123,548.82x = 170,492.79 × 66,958.98
  4. Step 4: Simplify right side
    123,548.82x = 11,416,023,315.75
  5. Step 5: Solve for x
    x = 11,416,023,315.75/123,548.82
  6. Step 6: Final answer
    x = 92,400.91

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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.