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Finding the Fourth Proportional to 265,790.92, 398,792.54 and 108,031.72

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Solution

The fourth proportional to 265,790.92, 398,792.54 and 108,031.72 is: 162,090.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,790.92 : 398,792.54 = 108,031.72 : x
  2. Step 2: Convert to fraction form
    265,790.92/398,792.54 = 108,031.72/x
  3. Step 3: Cross multiply
    265,790.92x = 398,792.54 × 108,031.72
  4. Step 4: Simplify right side
    265,790.92x = 43,082,244,019.37
  5. Step 5: Solve for x
    x = 43,082,244,019.37/265,790.92
  6. Step 6: Final answer
    x = 162,090.73

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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.