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Finding the Fourth Proportional to 74,634,612.80, 111,951,919.20 and 74,634,612.80

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Solution

The fourth proportional to 74,634,612.80, 111,951,919.20 and 74,634,612.80 is: 111,951,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,634,612.80 : 111,951,919.20 = 74,634,612.80 : x
  2. Step 2: Convert to fraction form
    74,634,612.80/111,951,919.20 = 74,634,612.80/x
  3. Step 3: Cross multiply
    74,634,612.80x = 111,951,919.20 × 74,634,612.80
  4. Step 4: Simplify right side
    74,634,612.80x = 8,355,488,141,708,886
  5. Step 5: Solve for x
    x = 8,355,488,141,708,886/74,634,612.80
  6. Step 6: Final answer
    x = 111,951,919.20

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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.