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Finding the Fourth Proportional to 235,826.94, 325,439.22 and 128,396.76

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Solution

The fourth proportional to 235,826.94, 325,439.22 and 128,396.76 is: 177,186.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,826.94 : 325,439.22 = 128,396.76 : x
  2. Step 2: Convert to fraction form
    235,826.94/325,439.22 = 128,396.76/x
  3. Step 3: Cross multiply
    235,826.94x = 325,439.22 × 128,396.76
  4. Step 4: Simplify right side
    235,826.94x = 41,785,341,424.93
  5. Step 5: Solve for x
    x = 41,785,341,424.93/235,826.94
  6. Step 6: Final answer
    x = 177,186.46

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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.