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Finding the Fourth Proportional to 299,115.11, 448,575.59 and 99,381.86

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Solution

The fourth proportional to 299,115.11, 448,575.59 and 99,381.86 is: 149,040.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,115.11 : 448,575.59 = 99,381.86 : x
  2. Step 2: Convert to fraction form
    299,115.11/448,575.59 = 99,381.86/x
  3. Step 3: Cross multiply
    299,115.11x = 448,575.59 × 99,381.86
  4. Step 4: Simplify right side
    299,115.11x = 44,580,277,854.69
  5. Step 5: Solve for x
    x = 44,580,277,854.69/299,115.11
  6. Step 6: Final answer
    x = 149,040.54

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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.