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Finding the Fourth Proportional to 316,698.81, 475,064.55 and 80,043.54

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Solution

The fourth proportional to 316,698.81, 475,064.55 and 80,043.54 is: 120,069.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,698.81 : 475,064.55 = 80,043.54 : x
  2. Step 2: Convert to fraction form
    316,698.81/475,064.55 = 80,043.54/x
  3. Step 3: Cross multiply
    316,698.81x = 475,064.55 × 80,043.54
  4. Step 4: Simplify right side
    316,698.81x = 38,025,848,310.51
  5. Step 5: Solve for x
    x = 38,025,848,310.51/316,698.81
  6. Step 6: Final answer
    x = 120,069.44

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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.