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Finding the Fourth Proportional to 400,868.26, 601,340.54 and 112,679.15

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Solution

The fourth proportional to 400,868.26, 601,340.54 and 112,679.15 is: 169,029.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,868.26 : 601,340.54 = 112,679.15 : x
  2. Step 2: Convert to fraction form
    400,868.26/601,340.54 = 112,679.15/x
  3. Step 3: Cross multiply
    400,868.26x = 601,340.54 × 112,679.15
  4. Step 4: Simplify right side
    400,868.26x = 67,758,541,354.00
  5. Step 5: Solve for x
    x = 67,758,541,354.00/400,868.26
  6. Step 6: Final answer
    x = 169,029.45

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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.