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Finding the Fourth Proportional to 216,703,113.24, 325,053,793.35 and 78,496,375.62

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Solution

The fourth proportional to 216,703,113.24, 325,053,793.35 and 78,496,375.62 is: 117,744,245.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,703,113.24 : 325,053,793.35 = 78,496,375.62 : x
  2. Step 2: Convert to fraction form
    216,703,113.24/325,053,793.35 = 78,496,375.62/x
  3. Step 3: Cross multiply
    216,703,113.24x = 325,053,793.35 × 78,496,375.62
  4. Step 4: Simplify right side
    216,703,113.24x = 25,515,544,659,507,460
  5. Step 5: Solve for x
    x = 25,515,544,659,507,460/216,703,113.24
  6. Step 6: Final answer
    x = 117,744,245.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.