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Finding the Fourth Proportional to 118,242.54, 163,178.18 and 64,531.03

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Solution

The fourth proportional to 118,242.54, 163,178.18 and 64,531.03 is: 89,054.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,242.54 : 163,178.18 = 64,531.03 : x
  2. Step 2: Convert to fraction form
    118,242.54/163,178.18 = 64,531.03/x
  3. Step 3: Cross multiply
    118,242.54x = 163,178.18 × 64,531.03
  4. Step 4: Simplify right side
    118,242.54x = 10,530,056,028.93
  5. Step 5: Solve for x
    x = 10,530,056,028.93/118,242.54
  6. Step 6: Final answer
    x = 89,054.72

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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.