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Finding the Fourth Proportional to 344,624.69, 516,961.76 and 91,903.86

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Solution

The fourth proportional to 344,624.69, 516,961.76 and 91,903.86 is: 137,862.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,624.69 : 516,961.76 = 91,903.86 : x
  2. Step 2: Convert to fraction form
    344,624.69/516,961.76 = 91,903.86/x
  3. Step 3: Cross multiply
    344,624.69x = 516,961.76 × 91,903.86
  4. Step 4: Simplify right side
    344,624.69x = 47,510,780,756.87
  5. Step 5: Solve for x
    x = 47,510,780,756.87/344,624.69
  6. Step 6: Final answer
    x = 137,862.38

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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.