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Finding the Fourth Proportional to 236,078.63, 325,788.00 and 128,648.40

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Solution

The fourth proportional to 236,078.63, 325,788.00 and 128,648.40 is: 177,534.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,078.63 : 325,788.00 = 128,648.40 : x
  2. Step 2: Convert to fraction form
    236,078.63/325,788.00 = 128,648.40/x
  3. Step 3: Cross multiply
    236,078.63x = 325,788.00 × 128,648.40
  4. Step 4: Simplify right side
    236,078.63x = 41,912,105,429.44
  5. Step 5: Solve for x
    x = 41,912,105,429.44/236,078.63
  6. Step 6: Final answer
    x = 177,534.52

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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.