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Finding the Fourth Proportional to 118,462.56, 163,467.08 and 64,744.18

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Solution

The fourth proportional to 118,462.56, 163,467.08 and 64,744.18 is: 89,340.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,462.56 : 163,467.08 = 64,744.18 : x
  2. Step 2: Convert to fraction form
    118,462.56/163,467.08 = 64,744.18/x
  3. Step 3: Cross multiply
    118,462.56x = 163,467.08 × 64,744.18
  4. Step 4: Simplify right side
    118,462.56x = 10,583,542,051.59
  5. Step 5: Solve for x
    x = 10,583,542,051.59/118,462.56
  6. Step 6: Final answer
    x = 89,340.82

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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.