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Finding the Fourth Proportional to 87,672,236.60, 123,009,869.80 and 87,672,236.60

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Solution

The fourth proportional to 87,672,236.60, 123,009,869.80 and 87,672,236.60 is: 123,009,869.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,672,236.60 : 123,009,869.80 = 87,672,236.60 : x
  2. Step 2: Convert to fraction form
    87,672,236.60/123,009,869.80 = 87,672,236.60/x
  3. Step 3: Cross multiply
    87,672,236.60x = 123,009,869.80 × 87,672,236.60
  4. Step 4: Simplify right side
    87,672,236.60x = 10,784,550,409,240,794
  5. Step 5: Solve for x
    x = 10,784,550,409,240,794/87,672,236.60
  6. Step 6: Final answer
    x = 123,009,869.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.