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Finding the Fourth Proportional to 117,245.70, 175,866.09 and 28,499.67

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Solution

The fourth proportional to 117,245.70, 175,866.09 and 28,499.67 is: 42,748.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,245.70 : 175,866.09 = 28,499.67 : x
  2. Step 2: Convert to fraction form
    117,245.70/175,866.09 = 28,499.67/x
  3. Step 3: Cross multiply
    117,245.70x = 175,866.09 × 28,499.67
  4. Step 4: Simplify right side
    117,245.70x = 5,012,125,529.19
  5. Step 5: Solve for x
    x = 5,012,125,529.19/117,245.70
  6. Step 6: Final answer
    x = 42,748.91

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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.