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Finding the Fourth Proportional to 69,538,245.80, 95,957,978.52 and 38,595,979.31

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Solution

The fourth proportional to 69,538,245.80, 95,957,978.52 and 38,595,979.31 is: 53,259,786.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,538,245.80 : 95,957,978.52 = 38,595,979.31 : x
  2. Step 2: Convert to fraction form
    69,538,245.80/95,957,978.52 = 38,595,979.31/x
  3. Step 3: Cross multiply
    69,538,245.80x = 95,957,978.52 × 38,595,979.31
  4. Step 4: Simplify right side
    69,538,245.80x = 3,703,592,153,827,239
  5. Step 5: Solve for x
    x = 3,703,592,153,827,239/69,538,245.80
  6. Step 6: Final answer
    x = 53,259,786.91

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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.