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Finding the Fourth Proportional to 70,189.59, 105,125.76 and 49,222.74

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Solution

The fourth proportional to 70,189.59, 105,125.76 and 49,222.74 is: 73,722.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,189.59 : 105,125.76 = 49,222.74 : x
  2. Step 2: Convert to fraction form
    70,189.59/105,125.76 = 49,222.74/x
  3. Step 3: Cross multiply
    70,189.59x = 105,125.76 × 49,222.74
  4. Step 4: Simplify right side
    70,189.59x = 5,174,577,951.78
  5. Step 5: Solve for x
    x = 5,174,577,951.78/70,189.59
  6. Step 6: Final answer
    x = 73,722.87

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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.