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Finding the Fourth Proportional to 236,393.45, 326,216.50 and 128,963.45

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Solution

The fourth proportional to 236,393.45, 326,216.50 and 128,963.45 is: 177,966.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,393.45 : 326,216.50 = 128,963.45 : x
  2. Step 2: Convert to fraction form
    236,393.45/326,216.50 = 128,963.45/x
  3. Step 3: Cross multiply
    236,393.45x = 326,216.50 × 128,963.45
  4. Step 4: Simplify right side
    236,393.45x = 42,070,005,286.93
  5. Step 5: Solve for x
    x = 42,070,005,286.93/236,393.45
  6. Step 6: Final answer
    x = 177,966.04

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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.