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Finding the Fourth Proportional to 118,915.46, 164,108.45 and 71,159.61

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Solution

The fourth proportional to 118,915.46, 164,108.45 and 71,159.61 is: 98,203.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,915.46 : 164,108.45 = 71,159.61 : x
  2. Step 2: Convert to fraction form
    118,915.46/164,108.45 = 71,159.61/x
  3. Step 3: Cross multiply
    118,915.46x = 164,108.45 × 71,159.61
  4. Step 4: Simplify right side
    118,915.46x = 11,677,893,477.60
  5. Step 5: Solve for x
    x = 11,677,893,477.60/118,915.46
  6. Step 6: Final answer
    x = 98,203.33

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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.