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Finding the Fourth Proportional to 72,719,076.30, 109,078,614.45 and 72,719,076.30

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Solution

The fourth proportional to 72,719,076.30, 109,078,614.45 and 72,719,076.30 is: 109,078,614.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,719,076.30 : 109,078,614.45 = 72,719,076.30 : x
  2. Step 2: Convert to fraction form
    72,719,076.30/109,078,614.45 = 72,719,076.30/x
  3. Step 3: Cross multiply
    72,719,076.30x = 109,078,614.45 × 72,719,076.30
  4. Step 4: Simplify right side
    72,719,076.30x = 7,932,096,086,887,832
  5. Step 5: Solve for x
    x = 7,932,096,086,887,832/72,719,076.30
  6. Step 6: Final answer
    x = 109,078,614.45

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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.