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Finding the Fourth Proportional to 335,639.61, 503,460.77 and 135,963.81

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Solution

The fourth proportional to 335,639.61, 503,460.77 and 135,963.81 is: 203,946.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,639.61 : 503,460.77 = 135,963.81 : x
  2. Step 2: Convert to fraction form
    335,639.61/503,460.77 = 135,963.81/x
  3. Step 3: Cross multiply
    335,639.61x = 503,460.77 × 135,963.81
  4. Step 4: Simplify right side
    335,639.61x = 68,452,443,794.91
  5. Step 5: Solve for x
    x = 68,452,443,794.91/335,639.61
  6. Step 6: Final answer
    x = 203,946.26

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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.