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Finding the Fourth Proportional to 111,898.48, 167,964.36 and 49,612.72

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Solution

The fourth proportional to 111,898.48, 167,964.36 and 49,612.72 is: 74,470.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,898.48 : 167,964.36 = 49,612.72 : x
  2. Step 2: Convert to fraction form
    111,898.48/167,964.36 = 49,612.72/x
  3. Step 3: Cross multiply
    111,898.48x = 167,964.36 × 49,612.72
  4. Step 4: Simplify right side
    111,898.48x = 8,333,168,762.66
  5. Step 5: Solve for x
    x = 8,333,168,762.66/111,898.48
  6. Step 6: Final answer
    x = 74,470.79

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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.