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Finding the Fourth Proportional to 178,602.88, 267,859.23 and 66,221.32

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Solution

The fourth proportional to 178,602.88, 267,859.23 and 66,221.32 is: 99,315.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,602.88 : 267,859.23 = 66,221.32 : x
  2. Step 2: Convert to fraction form
    178,602.88/267,859.23 = 66,221.32/x
  3. Step 3: Cross multiply
    178,602.88x = 267,859.23 × 66,221.32
  4. Step 4: Simplify right side
    178,602.88x = 17,737,991,784.78
  5. Step 5: Solve for x
    x = 17,737,991,784.78/178,602.88
  6. Step 6: Final answer
    x = 99,315.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.