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Finding the Fourth Proportional to 123,609.64, 170,574.06 and 69,905.92

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Solution

The fourth proportional to 123,609.64, 170,574.06 and 69,905.92 is: 96,466.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,609.64 : 170,574.06 = 69,905.92 : x
  2. Step 2: Convert to fraction form
    123,609.64/170,574.06 = 69,905.92/x
  3. Step 3: Cross multiply
    123,609.64x = 170,574.06 × 69,905.92
  4. Step 4: Simplify right side
    123,609.64x = 11,924,136,592.44
  5. Step 5: Solve for x
    x = 11,924,136,592.44/123,609.64
  6. Step 6: Final answer
    x = 96,466.07

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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.