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Finding the Fourth Proportional to 64,455.45, 88,991.88 and 49,321.08

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Solution

The fourth proportional to 64,455.45, 88,991.88 and 49,321.08 is: 68,096.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,455.45 : 88,991.88 = 49,321.08 : x
  2. Step 2: Convert to fraction form
    64,455.45/88,991.88 = 49,321.08/x
  3. Step 3: Cross multiply
    64,455.45x = 88,991.88 × 49,321.08
  4. Step 4: Simplify right side
    64,455.45x = 4,389,175,632.83
  5. Step 5: Solve for x
    x = 4,389,175,632.83/64,455.45
  6. Step 6: Final answer
    x = 68,096.27

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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.