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Finding the Fourth Proportional to 235,847.57, 325,465.43 and 128,415.65

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Solution

The fourth proportional to 235,847.57, 325,465.43 and 128,415.65 is: 177,211.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,847.57 : 325,465.43 = 128,415.65 : x
  2. Step 2: Convert to fraction form
    235,847.57/325,465.43 = 128,415.65/x
  3. Step 3: Cross multiply
    235,847.57x = 325,465.43 × 128,415.65
  4. Step 4: Simplify right side
    235,847.57x = 41,794,852,476.57
  5. Step 5: Solve for x
    x = 41,794,852,476.57/235,847.57
  6. Step 6: Final answer
    x = 177,211.30

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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.