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Finding the Fourth Proportional to 21,857,854.88, 32,788,356.96 and 8,394,682.88

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Solution

The fourth proportional to 21,857,854.88, 32,788,356.96 and 8,394,682.88 is: 12,592,629.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,857,854.88 : 32,788,356.96 = 8,394,682.88 : x
  2. Step 2: Convert to fraction form
    21,857,854.88/32,788,356.96 = 8,394,682.88/x
  3. Step 3: Cross multiply
    21,857,854.88x = 32,788,356.96 × 8,394,682.88
  4. Step 4: Simplify right side
    21,857,854.88x = 275,247,858,671,499.06
  5. Step 5: Solve for x
    x = 275,247,858,671,499.06/21,857,854.88
  6. Step 6: Final answer
    x = 12,592,629.07

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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.