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Finding the Fourth Proportional to 136,035.51, 204,074.39 and 69,439.60

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Solution

The fourth proportional to 136,035.51, 204,074.39 and 69,439.60 is: 104,170.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,035.51 : 204,074.39 = 69,439.60 : x
  2. Step 2: Convert to fraction form
    136,035.51/204,074.39 = 69,439.60/x
  3. Step 3: Cross multiply
    136,035.51x = 204,074.39 × 69,439.60
  4. Step 4: Simplify right side
    136,035.51x = 14,170,844,011.84
  5. Step 5: Solve for x
    x = 14,170,844,011.84/136,035.51
  6. Step 6: Final answer
    x = 104,170.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.