Home / 38,530,018.24-53,171,939.64-21,126,319.36

Finding the Fourth Proportional to 38,530,018.24, 53,171,939.64 and 21,126,319.36

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Solution

The fourth proportional to 38,530,018.24, 53,171,939.64 and 21,126,319.36 is: 29,154,602.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,530,018.24 : 53,171,939.64 = 21,126,319.36 : x
  2. Step 2: Convert to fraction form
    38,530,018.24/53,171,939.64 = 21,126,319.36/x
  3. Step 3: Cross multiply
    38,530,018.24x = 53,171,939.64 × 21,126,319.36
  4. Step 4: Simplify right side
    38,530,018.24x = 1,123,327,377,825,283.38
  5. Step 5: Solve for x
    x = 1,123,327,377,825,283.38/38,530,018.24
  6. Step 6: Final answer
    x = 29,154,602.80

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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.