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Finding the Fourth Proportional to 67,264,945.20, 100,897,417.80 and 50,258,833.20

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Solution

The fourth proportional to 67,264,945.20, 100,897,417.80 and 50,258,833.20 is: 75,388,249.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,264,945.20 : 100,897,417.80 = 50,258,833.20 : x
  2. Step 2: Convert to fraction form
    67,264,945.20/100,897,417.80 = 50,258,833.20/x
  3. Step 3: Cross multiply
    67,264,945.20x = 100,897,417.80 × 50,258,833.20
  4. Step 4: Simplify right side
    67,264,945.20x = 5,070,986,491,520,911
  5. Step 5: Solve for x
    x = 5,070,986,491,520,911/67,264,945.20
  6. Step 6: Final answer
    x = 75,388,249.80

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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.