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Finding the Fourth Proportional to 123,922.68, 171,012.68 and 70,207.56

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Solution

The fourth proportional to 123,922.68, 171,012.68 and 70,207.56 is: 96,886.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,922.68 : 171,012.68 = 70,207.56 : x
  2. Step 2: Convert to fraction form
    123,922.68/171,012.68 = 70,207.56/x
  3. Step 3: Cross multiply
    123,922.68x = 171,012.68 × 70,207.56
  4. Step 4: Simplify right side
    123,922.68x = 12,006,382,991.86
  5. Step 5: Solve for x
    x = 12,006,382,991.86/123,922.68
  6. Step 6: Final answer
    x = 96,886.08

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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.