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Finding the Fourth Proportional to 236,395.86, 326,223.21 and 128,963.61

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Solution

The fourth proportional to 236,395.86, 326,223.21 and 128,963.61 is: 177,968.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,395.86 : 326,223.21 = 128,963.61 : x
  2. Step 2: Convert to fraction form
    236,395.86/326,223.21 = 128,963.61/x
  3. Step 3: Cross multiply
    236,395.86x = 326,223.21 × 128,963.61
  4. Step 4: Simplify right side
    236,395.86x = 42,070,922,827.39
  5. Step 5: Solve for x
    x = 42,070,922,827.39/236,395.86
  6. Step 6: Final answer
    x = 177,968.10

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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.