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Finding the Fourth Proportional to 89,937.36, 134,911.88 and 29,963.28

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Solution

The fourth proportional to 89,937.36, 134,911.88 and 29,963.28 is: 44,946.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,937.36 : 134,911.88 = 29,963.28 : x
  2. Step 2: Convert to fraction form
    89,937.36/134,911.88 = 29,963.28/x
  3. Step 3: Cross multiply
    89,937.36x = 134,911.88 × 29,963.28
  4. Step 4: Simplify right side
    89,937.36x = 4,042,402,285.95
  5. Step 5: Solve for x
    x = 4,042,402,285.95/89,937.36
  6. Step 6: Final answer
    x = 44,946.86

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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.