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Finding the Fourth Proportional to 99,326.86, 148,992.99 and 29,208.40

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Solution

The fourth proportional to 99,326.86, 148,992.99 and 29,208.40 is: 43,813.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,326.86 : 148,992.99 = 29,208.40 : x
  2. Step 2: Convert to fraction form
    99,326.86/148,992.99 = 29,208.40/x
  3. Step 3: Cross multiply
    99,326.86x = 148,992.99 × 29,208.40
  4. Step 4: Simplify right side
    99,326.86x = 4,351,846,849.12
  5. Step 5: Solve for x
    x = 4,351,846,849.12/99,326.86
  6. Step 6: Final answer
    x = 43,813.39

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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.