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Finding the Fourth Proportional to 64,901.43, 89,604.52 and 49,765.01

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Solution

The fourth proportional to 64,901.43, 89,604.52 and 49,765.01 is: 68,706.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,901.43 : 89,604.52 = 49,765.01 : x
  2. Step 2: Convert to fraction form
    64,901.43/89,604.52 = 49,765.01/x
  3. Step 3: Cross multiply
    64,901.43x = 89,604.52 × 49,765.01
  4. Step 4: Simplify right side
    64,901.43x = 4,459,169,833.85
  5. Step 5: Solve for x
    x = 4,459,169,833.85/64,901.43
  6. Step 6: Final answer
    x = 68,706.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.