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Finding the Fourth Proportional to 117,672.88, 176,584.38 and 42,785.85

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Solution

The fourth proportional to 117,672.88, 176,584.38 and 42,785.85 is: 64,206.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,672.88 : 176,584.38 = 42,785.85 : x
  2. Step 2: Convert to fraction form
    117,672.88/176,584.38 = 42,785.85/x
  3. Step 3: Cross multiply
    117,672.88x = 176,584.38 × 42,785.85
  4. Step 4: Simplify right side
    117,672.88x = 7,555,312,795.02
  5. Step 5: Solve for x
    x = 7,555,312,795.02/117,672.88
  6. Step 6: Final answer
    x = 64,206.07

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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.