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Finding the Fourth Proportional to 159,985,876.88, 239,978,815.38 and 44,970,419.21

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Solution

The fourth proportional to 159,985,876.88, 239,978,815.38 and 44,970,419.21 is: 67,455,628.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,985,876.88 : 239,978,815.38 = 44,970,419.21 : x
  2. Step 2: Convert to fraction form
    159,985,876.88/239,978,815.38 = 44,970,419.21/x
  3. Step 3: Cross multiply
    159,985,876.88x = 239,978,815.38 × 44,970,419.21
  4. Step 4: Simplify right side
    159,985,876.88x = 10,791,947,927,957,900
  5. Step 5: Solve for x
    x = 10,791,947,927,957,900/159,985,876.88
  6. Step 6: Final answer
    x = 67,455,628.82

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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.