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Finding the Fourth Proportional to 118,449.84, 163,455.96 and 64,736.64

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Solution

The fourth proportional to 118,449.84, 163,455.96 and 64,736.64 is: 89,333.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,449.84 : 163,455.96 = 64,736.64 : x
  2. Step 2: Convert to fraction form
    118,449.84/163,455.96 = 64,736.64/x
  3. Step 3: Cross multiply
    118,449.84x = 163,455.96 × 64,736.64
  4. Step 4: Simplify right side
    118,449.84x = 10,581,589,638.37
  5. Step 5: Solve for x
    x = 10,581,589,638.37/118,449.84
  6. Step 6: Final answer
    x = 89,333.93

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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.