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Finding the Fourth Proportional to 884,956,939.20, 1,328,238,475.20 and 448,561,209.60

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Solution

The fourth proportional to 884,956,939.20, 1,328,238,475.20 and 448,561,209.60 is: 673,248,867.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,956,939.20 : 1,328,238,475.20 = 448,561,209.60 : x
  2. Step 2: Convert to fraction form
    884,956,939.20/1,328,238,475.20 = 448,561,209.60/x
  3. Step 3: Cross multiply
    884,956,939.20x = 1,328,238,475.20 × 448,561,209.60
  4. Step 4: Simplify right side
    884,956,939.20x = 595,796,257,072,971,648
  5. Step 5: Solve for x
    x = 595,796,257,072,971,648/884,956,939.20
  6. Step 6: Final answer
    x = 673,248,867.47

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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.