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Finding the Fourth Proportional to 123,707.01, 170,602.96 and 104,626.79

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Solution

The fourth proportional to 123,707.01, 170,602.96 and 104,626.79 is: 144,289.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,707.01 : 170,602.96 = 104,626.79 : x
  2. Step 2: Convert to fraction form
    123,707.01/170,602.96 = 104,626.79/x
  3. Step 3: Cross multiply
    123,707.01x = 170,602.96 × 104,626.79
  4. Step 4: Simplify right side
    123,707.01x = 17,849,640,069.30
  5. Step 5: Solve for x
    x = 17,849,640,069.30/123,707.01
  6. Step 6: Final answer
    x = 144,289.64

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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.