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Finding the Fourth Proportional to 235,798.56, 325,406.17 and 128,371.68

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Solution

The fourth proportional to 235,798.56, 325,406.17 and 128,371.68 is: 177,155.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,798.56 : 325,406.17 = 128,371.68 : x
  2. Step 2: Convert to fraction form
    235,798.56/325,406.17 = 128,371.68/x
  3. Step 3: Cross multiply
    235,798.56x = 325,406.17 × 128,371.68
  4. Step 4: Simplify right side
    235,798.56x = 41,772,936,725.27
  5. Step 5: Solve for x
    x = 41,772,936,725.27/235,798.56
  6. Step 6: Final answer
    x = 177,155.18

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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.