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Finding the Fourth Proportional to 79,719,783.90, 119,367,099.45 and 79,719,783.90

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Solution

The fourth proportional to 79,719,783.90, 119,367,099.45 and 79,719,783.90 is: 119,367,099.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,719,783.90 : 119,367,099.45 = 79,719,783.90 : x
  2. Step 2: Convert to fraction form
    79,719,783.90/119,367,099.45 = 79,719,783.90/x
  3. Step 3: Cross multiply
    79,719,783.90x = 119,367,099.45 × 79,719,783.90
  4. Step 4: Simplify right side
    79,719,783.90x = 9,515,919,372,923,810
  5. Step 5: Solve for x
    x = 9,515,919,372,923,810/79,719,783.90
  6. Step 6: Final answer
    x = 119,367,099.45

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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.