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Finding the Fourth Proportional to 490,268.70, 735,315.51 and 130,441.62

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Solution

The fourth proportional to 490,268.70, 735,315.51 and 130,441.62 is: 195,639.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,268.70 : 735,315.51 = 130,441.62 : x
  2. Step 2: Convert to fraction form
    490,268.70/735,315.51 = 130,441.62/x
  3. Step 3: Cross multiply
    490,268.70x = 735,315.51 × 130,441.62
  4. Step 4: Simplify right side
    490,268.70x = 95,915,746,335.53
  5. Step 5: Solve for x
    x = 95,915,746,335.53/490,268.70
  6. Step 6: Final answer
    x = 195,639.14

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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.