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Finding the Fourth Proportional to 38,958,720.12, 53,749,978.11 and 22,438,513.89

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Solution

The fourth proportional to 38,958,720.12, 53,749,978.11 and 22,438,513.89 is: 30,957,629.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,958,720.12 : 53,749,978.11 = 22,438,513.89 : x
  2. Step 2: Convert to fraction form
    38,958,720.12/53,749,978.11 = 22,438,513.89/x
  3. Step 3: Cross multiply
    38,958,720.12x = 53,749,978.11 × 22,438,513.89
  4. Step 4: Simplify right side
    38,958,720.12x = 1,206,069,630,408,431
  5. Step 5: Solve for x
    x = 1,206,069,630,408,431/38,958,720.12
  6. Step 6: Final answer
    x = 30,957,629.68

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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.