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Finding the Fourth Proportional to 235,694.75, 325,254.11 and 128,266.61

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Solution

The fourth proportional to 235,694.75, 325,254.11 and 128,266.61 is: 177,005.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,694.75 : 325,254.11 = 128,266.61 : x
  2. Step 2: Convert to fraction form
    235,694.75/325,254.11 = 128,266.61/x
  3. Step 3: Cross multiply
    235,694.75x = 325,254.11 × 128,266.61
  4. Step 4: Simplify right side
    235,694.75x = 41,719,239,810.66
  5. Step 5: Solve for x
    x = 41,719,239,810.66/235,694.75
  6. Step 6: Final answer
    x = 177,005.39

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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.