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Finding the Fourth Proportional to 422,712,022.80, 634,068,034.20 and 422,712,022.80

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Solution

The fourth proportional to 422,712,022.80, 634,068,034.20 and 422,712,022.80 is: 634,068,034.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,712,022.80 : 634,068,034.20 = 422,712,022.80 : x
  2. Step 2: Convert to fraction form
    422,712,022.80/634,068,034.20 = 422,712,022.80/x
  3. Step 3: Cross multiply
    422,712,022.80x = 634,068,034.20 × 422,712,022.80
  4. Step 4: Simplify right side
    422,712,022.80x = 268,028,181,329,501,600
  5. Step 5: Solve for x
    x = 268,028,181,329,501,600/422,712,022.80
  6. Step 6: Final answer
    x = 634,068,034.20

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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.