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Finding the Fourth Proportional to 194,730.40, 291,879.60 and 76,362.40

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Solution

The fourth proportional to 194,730.40, 291,879.60 and 76,362.40 is: 114,458.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,730.40 : 291,879.60 = 76,362.40 : x
  2. Step 2: Convert to fraction form
    194,730.40/291,879.60 = 76,362.40/x
  3. Step 3: Cross multiply
    194,730.40x = 291,879.60 × 76,362.40
  4. Step 4: Simplify right side
    194,730.40x = 22,288,626,767.04
  5. Step 5: Solve for x
    x = 22,288,626,767.04/194,730.40
  6. Step 6: Final answer
    x = 114,458.90

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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.