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Finding the Fourth Proportional to 18,759,743.70, 28,139,615.55 and 17,714,649.30

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Solution

The fourth proportional to 18,759,743.70, 28,139,615.55 and 17,714,649.30 is: 26,571,973.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759,743.70 : 28,139,615.55 = 17,714,649.30 : x
  2. Step 2: Convert to fraction form
    18,759,743.70/28,139,615.55 = 17,714,649.30/x
  3. Step 3: Cross multiply
    18,759,743.70x = 28,139,615.55 × 17,714,649.30
  4. Step 4: Simplify right side
    18,759,743.70x = 498,483,420,905,076.62
  5. Step 5: Solve for x
    x = 498,483,420,905,076.62/18,759,743.70
  6. Step 6: Final answer
    x = 26,571,973.95

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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.