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Finding the Fourth Proportional to 400,942.35, 601,503.28 and 134,695.60

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Solution

The fourth proportional to 400,942.35, 601,503.28 and 134,695.60 is: 202,073.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,942.35 : 601,503.28 = 134,695.60 : x
  2. Step 2: Convert to fraction form
    400,942.35/601,503.28 = 134,695.60/x
  3. Step 3: Cross multiply
    400,942.35x = 601,503.28 × 134,695.60
  4. Step 4: Simplify right side
    400,942.35x = 81,019,845,201.57
  5. Step 5: Solve for x
    x = 81,019,845,201.57/400,942.35
  6. Step 6: Final answer
    x = 202,073.55

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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.