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Finding the Fourth Proportional to 77,698.55, 116,472.21 and 49,530.71

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Solution

The fourth proportional to 77,698.55, 116,472.21 and 49,530.71 is: 74,247.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,698.55 : 116,472.21 = 49,530.71 : x
  2. Step 2: Convert to fraction form
    77,698.55/116,472.21 = 49,530.71/x
  3. Step 3: Cross multiply
    77,698.55x = 116,472.21 × 49,530.71
  4. Step 4: Simplify right side
    77,698.55x = 5,768,951,256.57
  5. Step 5: Solve for x
    x = 5,768,951,256.57/77,698.55
  6. Step 6: Final answer
    x = 74,247.86

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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.