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Finding the Fourth Proportional to 67,278,045.90, 100,917,068.85 and 67,278,045.90

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Solution

The fourth proportional to 67,278,045.90, 100,917,068.85 and 67,278,045.90 is: 100,917,068.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,278,045.90 : 100,917,068.85 = 67,278,045.90 : x
  2. Step 2: Convert to fraction form
    67,278,045.90/100,917,068.85 = 67,278,045.90/x
  3. Step 3: Cross multiply
    67,278,045.90x = 100,917,068.85 × 67,278,045.90
  4. Step 4: Simplify right side
    67,278,045.90x = 6,789,503,190,183,760
  5. Step 5: Solve for x
    x = 6,789,503,190,183,760/67,278,045.90
  6. Step 6: Final answer
    x = 100,917,068.85

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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.