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Finding the Fourth Proportional to 123,893.96, 170,968.19 and 70,177.90

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Solution

The fourth proportional to 123,893.96, 170,968.19 and 70,177.90 is: 96,842.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,893.96 : 170,968.19 = 70,177.90 : x
  2. Step 2: Convert to fraction form
    123,893.96/170,968.19 = 70,177.90/x
  3. Step 3: Cross multiply
    123,893.96x = 170,968.19 × 70,177.90
  4. Step 4: Simplify right side
    123,893.96x = 11,998,188,541.00
  5. Step 5: Solve for x
    x = 11,998,188,541.00/123,893.96
  6. Step 6: Final answer
    x = 96,842.40

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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.