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Finding the Fourth Proportional to 265,890.60, 398,829.42 and 108,079.92

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Solution

The fourth proportional to 265,890.60, 398,829.42 and 108,079.92 is: 162,117.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,890.60 : 398,829.42 = 108,079.92 : x
  2. Step 2: Convert to fraction form
    265,890.60/398,829.42 = 108,079.92/x
  3. Step 3: Cross multiply
    265,890.60x = 398,829.42 × 108,079.92
  4. Step 4: Simplify right side
    265,890.60x = 43,105,451,807.25
  5. Step 5: Solve for x
    x = 43,105,451,807.25/265,890.60
  6. Step 6: Final answer
    x = 162,117.25

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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.