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Finding the Fourth Proportional to 316,869.70, 475,304.55 and 130,015.30

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Solution

The fourth proportional to 316,869.70, 475,304.55 and 130,015.30 is: 195,022.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,869.70 : 475,304.55 = 130,015.30 : x
  2. Step 2: Convert to fraction form
    316,869.70/475,304.55 = 130,015.30/x
  3. Step 3: Cross multiply
    316,869.70x = 475,304.55 × 130,015.30
  4. Step 4: Simplify right side
    316,869.70x = 61,796,863,659.62
  5. Step 5: Solve for x
    x = 61,796,863,659.62/316,869.70
  6. Step 6: Final answer
    x = 195,022.95

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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.