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Finding the Fourth Proportional to 235,845.52, 325,465.22 and 128,415.48

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Solution

The fourth proportional to 235,845.52, 325,465.22 and 128,415.48 is: 177,212.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,845.52 : 325,465.22 = 128,415.48 : x
  2. Step 2: Convert to fraction form
    235,845.52/325,465.22 = 128,415.48/x
  3. Step 3: Cross multiply
    235,845.52x = 325,465.22 × 128,415.48
  4. Step 4: Simplify right side
    235,845.52x = 41,794,772,449.61
  5. Step 5: Solve for x
    x = 41,794,772,449.61/235,845.52
  6. Step 6: Final answer
    x = 177,212.49

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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.