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Finding the Fourth Proportional to 123,904.88, 170,992.23 and 70,189.88

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Solution

The fourth proportional to 123,904.88, 170,992.23 and 70,189.88 is: 96,864.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,904.88 : 170,992.23 = 70,189.88 : x
  2. Step 2: Convert to fraction form
    123,904.88/170,992.23 = 70,189.88/x
  3. Step 3: Cross multiply
    123,904.88x = 170,992.23 × 70,189.88
  4. Step 4: Simplify right side
    123,904.88x = 12,001,924,104.63
  5. Step 5: Solve for x
    x = 12,001,924,104.63/123,904.88
  6. Step 6: Final answer
    x = 96,864.01

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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.