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Finding the Fourth Proportional to 123,902.92, 170,975.40 and 68,714.01

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Solution

The fourth proportional to 123,902.92, 170,975.40 and 68,714.01 is: 94,819.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,902.92 : 170,975.40 = 68,714.01 : x
  2. Step 2: Convert to fraction form
    123,902.92/170,975.40 = 68,714.01/x
  3. Step 3: Cross multiply
    123,902.92x = 170,975.40 × 68,714.01
  4. Step 4: Simplify right side
    123,902.92x = 11,748,405,345.35
  5. Step 5: Solve for x
    x = 11,748,405,345.35/123,902.92
  6. Step 6: Final answer
    x = 94,819.44

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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.