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Finding the Fourth Proportional to 236,085.84, 325,786.86 and 128,655.54

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Solution

The fourth proportional to 236,085.84, 325,786.86 and 128,655.54 is: 177,538.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,085.84 : 325,786.86 = 128,655.54 : x
  2. Step 2: Convert to fraction form
    236,085.84/325,786.86 = 128,655.54/x
  3. Step 3: Cross multiply
    236,085.84x = 325,786.86 × 128,655.54
  4. Step 4: Simplify right side
    236,085.84x = 41,914,284,398.20
  5. Step 5: Solve for x
    x = 41,914,284,398.20/236,085.84
  6. Step 6: Final answer
    x = 177,538.32

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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.