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Finding the Fourth Proportional to 118,521.88, 163,546.80 and 70,125.29

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Solution

The fourth proportional to 118,521.88, 163,546.80 and 70,125.29 is: 96,764.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,521.88 : 163,546.80 = 70,125.29 : x
  2. Step 2: Convert to fraction form
    118,521.88/163,546.80 = 70,125.29/x
  3. Step 3: Cross multiply
    118,521.88x = 163,546.80 × 70,125.29
  4. Step 4: Simplify right side
    118,521.88x = 11,468,766,311.17
  5. Step 5: Solve for x
    x = 11,468,766,311.17/118,521.88
  6. Step 6: Final answer
    x = 96,764.97

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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.