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Finding the Fourth Proportional to 236,078.70, 325,792.17 and 128,648.40

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Solution

The fourth proportional to 236,078.70, 325,792.17 and 128,648.40 is: 177,536.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,078.70 : 325,792.17 = 128,648.40 : x
  2. Step 2: Convert to fraction form
    236,078.70/325,792.17 = 128,648.40/x
  3. Step 3: Cross multiply
    236,078.70x = 325,792.17 × 128,648.40
  4. Step 4: Simplify right side
    236,078.70x = 41,912,641,403.03
  5. Step 5: Solve for x
    x = 41,912,641,403.03/236,078.70
  6. Step 6: Final answer
    x = 177,536.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.