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Finding the Fourth Proportional to 400,618.15, 600,986.60 and 116,311.03

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Solution

The fourth proportional to 400,618.15, 600,986.60 and 116,311.03 is: 174,483.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,618.15 : 600,986.60 = 116,311.03 : x
  2. Step 2: Convert to fraction form
    400,618.15/600,986.60 = 116,311.03/x
  3. Step 3: Cross multiply
    400,618.15x = 600,986.60 × 116,311.03
  4. Step 4: Simplify right side
    400,618.15x = 69,901,369,250.51
  5. Step 5: Solve for x
    x = 69,901,369,250.51/400,618.15
  6. Step 6: Final answer
    x = 174,483.78

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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.