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Finding the Fourth Proportional to 124,668.64, 187,044.46 and 40,431.54

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Solution

The fourth proportional to 124,668.64, 187,044.46 and 40,431.54 is: 60,660.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,668.64 : 187,044.46 = 40,431.54 : x
  2. Step 2: Convert to fraction form
    124,668.64/187,044.46 = 40,431.54/x
  3. Step 3: Cross multiply
    124,668.64x = 187,044.46 × 40,431.54
  4. Step 4: Simplify right side
    124,668.64x = 7,562,495,566.27
  5. Step 5: Solve for x
    x = 7,562,495,566.27/124,668.64
  6. Step 6: Final answer
    x = 60,660.77

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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.