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Finding the Fourth Proportional to 118,785.08, 163,929.32 and 73,486.62

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Solution

The fourth proportional to 118,785.08, 163,929.32 and 73,486.62 is: 101,415.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,785.08 : 163,929.32 = 73,486.62 : x
  2. Step 2: Convert to fraction form
    118,785.08/163,929.32 = 73,486.62/x
  3. Step 3: Cross multiply
    118,785.08x = 163,929.32 × 73,486.62
  4. Step 4: Simplify right side
    118,785.08x = 12,046,611,092.79
  5. Step 5: Solve for x
    x = 12,046,611,092.79/118,785.08
  6. Step 6: Final answer
    x = 101,415.18

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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.