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Finding the Fourth Proportional to 28,993,629.20, 43,490,443.80 and 19,438,480.40

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Solution

The fourth proportional to 28,993,629.20, 43,490,443.80 and 19,438,480.40 is: 29,157,720.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,993,629.20 : 43,490,443.80 = 19,438,480.40 : x
  2. Step 2: Convert to fraction form
    28,993,629.20/43,490,443.80 = 19,438,480.40/x
  3. Step 3: Cross multiply
    28,993,629.20x = 43,490,443.80 × 19,438,480.40
  4. Step 4: Simplify right side
    28,993,629.20x = 845,388,139,393,601.38
  5. Step 5: Solve for x
    x = 845,388,139,393,601.38/28,993,629.20
  6. Step 6: Final answer
    x = 29,157,720.60

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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.