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Finding the Fourth Proportional to 170,679.02, 255,908.64 and 70,908.08

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Solution

The fourth proportional to 170,679.02, 255,908.64 and 70,908.08 is: 106,316.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,679.02 : 255,908.64 = 70,908.08 : x
  2. Step 2: Convert to fraction form
    170,679.02/255,908.64 = 70,908.08/x
  3. Step 3: Cross multiply
    170,679.02x = 255,908.64 × 70,908.08
  4. Step 4: Simplify right side
    170,679.02x = 18,145,990,317.81
  5. Step 5: Solve for x
    x = 18,145,990,317.81/170,679.02
  6. Step 6: Final answer
    x = 106,316.47

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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.