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Finding the Fourth Proportional to 123,196.71, 170,011.19 and 66,608.09

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Solution

The fourth proportional to 123,196.71, 170,011.19 and 66,608.09 is: 91,919.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,196.71 : 170,011.19 = 66,608.09 : x
  2. Step 2: Convert to fraction form
    123,196.71/170,011.19 = 66,608.09/x
  3. Step 3: Cross multiply
    123,196.71x = 170,011.19 × 66,608.09
  4. Step 4: Simplify right side
    123,196.71x = 11,324,119,461.43
  5. Step 5: Solve for x
    x = 11,324,119,461.43/123,196.71
  6. Step 6: Final answer
    x = 91,919.01

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1.5x scale

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.