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Finding the Fourth Proportional to 123,655.97, 170,629.73 and 73,345.25

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Solution

The fourth proportional to 123,655.97, 170,629.73 and 73,345.25 is: 101,207.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,655.97 : 170,629.73 = 73,345.25 : x
  2. Step 2: Convert to fraction form
    123,655.97/170,629.73 = 73,345.25/x
  3. Step 3: Cross multiply
    123,655.97x = 170,629.73 × 73,345.25
  4. Step 4: Simplify right side
    123,655.97x = 12,514,879,837.56
  5. Step 5: Solve for x
    x = 12,514,879,837.56/123,655.97
  6. Step 6: Final answer
    x = 101,207.24

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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.