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Finding the Fourth Proportional to 67,998,661.72, 102,028,041.96 and 35,642,827.78

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Solution

The fourth proportional to 67,998,661.72, 102,028,041.96 and 35,642,827.78 is: 53,479,992.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,998,661.72 : 102,028,041.96 = 35,642,827.78 : x
  2. Step 2: Convert to fraction form
    67,998,661.72/102,028,041.96 = 35,642,827.78/x
  3. Step 3: Cross multiply
    67,998,661.72x = 102,028,041.96 × 35,642,827.78
  4. Step 4: Simplify right side
    67,998,661.72x = 3,636,567,928,310,893.50
  5. Step 5: Solve for x
    x = 3,636,567,928,310,893.50/67,998,661.72
  6. Step 6: Final answer
    x = 53,479,992.64

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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.