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Finding the Fourth Proportional to 671,047,690.59, 925,568,788.30 and 447,916,872.33

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Solution

The fourth proportional to 671,047,690.59, 925,568,788.30 and 447,916,872.33 is: 617,806,875.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,047,690.59 : 925,568,788.30 = 447,916,872.33 : x
  2. Step 2: Convert to fraction form
    671,047,690.59/925,568,788.30 = 447,916,872.33/x
  3. Step 3: Cross multiply
    671,047,690.59x = 925,568,788.30 × 447,916,872.33
  4. Step 4: Simplify right side
    671,047,690.59x = 414,577,876,780,484,096
  5. Step 5: Solve for x
    x = 414,577,876,780,484,096/671,047,690.59
  6. Step 6: Final answer
    x = 617,806,875.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.