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Finding the Fourth Proportional to 386,797.63, 580,065.06 and 134,019.13

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Solution

The fourth proportional to 386,797.63, 580,065.06 and 134,019.13 is: 200,983.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,797.63 : 580,065.06 = 134,019.13 : x
  2. Step 2: Convert to fraction form
    386,797.63/580,065.06 = 134,019.13/x
  3. Step 3: Cross multiply
    386,797.63x = 580,065.06 × 134,019.13
  4. Step 4: Simplify right side
    386,797.63x = 77,739,814,684.60
  5. Step 5: Solve for x
    x = 77,739,814,684.60/386,797.63
  6. Step 6: Final answer
    x = 200,983.17

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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.