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Finding the Fourth Proportional to 18,515,595.80, 25,858,061.20 and 18,515,595.80

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Solution

The fourth proportional to 18,515,595.80, 25,858,061.20 and 18,515,595.80 is: 25,858,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515,595.80 : 25,858,061.20 = 18,515,595.80 : x
  2. Step 2: Convert to fraction form
    18,515,595.80/25,858,061.20 = 18,515,595.80/x
  3. Step 3: Cross multiply
    18,515,595.80x = 25,858,061.20 × 18,515,595.80
  4. Step 4: Simplify right side
    18,515,595.80x = 478,777,409,350,862.94
  5. Step 5: Solve for x
    x = 478,777,409,350,862.94/18,515,595.80
  6. Step 6: Final answer
    x = 25,858,061.20

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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.