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Finding the Fourth Proportional to 118,895.70, 178,416.02 and 47,805.01

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Solution

The fourth proportional to 118,895.70, 178,416.02 and 47,805.01 is: 71,736.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,895.70 : 178,416.02 = 47,805.01 : x
  2. Step 2: Convert to fraction form
    118,895.70/178,416.02 = 47,805.01/x
  3. Step 3: Cross multiply
    118,895.70x = 178,416.02 × 47,805.01
  4. Step 4: Simplify right side
    118,895.70x = 8,529,179,620.26
  5. Step 5: Solve for x
    x = 8,529,179,620.26/118,895.70
  6. Step 6: Final answer
    x = 71,736.65

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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.