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Finding the Fourth Proportional to 99,325.86, 148,991.49 and 29,207.40

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Solution

The fourth proportional to 99,325.86, 148,991.49 and 29,207.40 is: 43,811.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,325.86 : 148,991.49 = 29,207.40 : x
  2. Step 2: Convert to fraction form
    99,325.86/148,991.49 = 29,207.40/x
  3. Step 3: Cross multiply
    99,325.86x = 148,991.49 × 29,207.40
  4. Step 4: Simplify right side
    99,325.86x = 4,351,654,045.03
  5. Step 5: Solve for x
    x = 4,351,654,045.03/99,325.86
  6. Step 6: Final answer
    x = 43,811.89

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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.