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Finding the Fourth Proportional to 170,710.65, 255,921.37 and 70,808.49

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Solution

The fourth proportional to 170,710.65, 255,921.37 and 70,808.49 is: 106,152.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,710.65 : 255,921.37 = 70,808.49 : x
  2. Step 2: Convert to fraction form
    170,710.65/255,921.37 = 70,808.49/x
  3. Step 3: Cross multiply
    170,710.65x = 255,921.37 × 70,808.49
  4. Step 4: Simplify right side
    170,710.65x = 18,121,405,768.43
  5. Step 5: Solve for x
    x = 18,121,405,768.43/170,710.65
  6. Step 6: Final answer
    x = 106,152.75

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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.