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Finding the Fourth Proportional to 317,230.55, 475,655.74 and 100,995.83

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Solution

The fourth proportional to 317,230.55, 475,655.74 and 100,995.83 is: 151,433.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,230.55 : 475,655.74 = 100,995.83 : x
  2. Step 2: Convert to fraction form
    317,230.55/475,655.74 = 100,995.83/x
  3. Step 3: Cross multiply
    317,230.55x = 475,655.74 × 100,995.83
  4. Step 4: Simplify right side
    317,230.55x = 48,039,243,372.31
  5. Step 5: Solve for x
    x = 48,039,243,372.31/317,230.55
  6. Step 6: Final answer
    x = 151,433.22

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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.