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Finding the Fourth Proportional to 417,005.80, 625,815.90 and 167,866.60

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Solution

The fourth proportional to 417,005.80, 625,815.90 and 167,866.60 is: 251,923.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,005.80 : 625,815.90 = 167,866.60 : x
  2. Step 2: Convert to fraction form
    417,005.80/625,815.90 = 167,866.60/x
  3. Step 3: Cross multiply
    417,005.80x = 625,815.90 × 167,866.60
  4. Step 4: Simplify right side
    417,005.80x = 105,053,587,358.94
  5. Step 5: Solve for x
    x = 105,053,587,358.94/417,005.80
  6. Step 6: Final answer
    x = 251,923.56

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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.