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Finding the Fourth Proportional to 17,619,994.80, 26,395,000.20 and 15,515,809.20

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Solution

The fourth proportional to 17,619,994.80, 26,395,000.20 and 15,515,809.20 is: 23,242,900.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,619,994.80 : 26,395,000.20 = 15,515,809.20 : x
  2. Step 2: Convert to fraction form
    17,619,994.80/26,395,000.20 = 15,515,809.20/x
  3. Step 3: Cross multiply
    17,619,994.80x = 26,395,000.20 × 15,515,809.20
  4. Step 4: Simplify right side
    17,619,994.80x = 409,539,786,937,161.81
  5. Step 5: Solve for x
    x = 409,539,786,937,161.81/17,619,994.80
  6. Step 6: Final answer
    x = 23,242,900.56

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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.