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Finding the Fourth Proportional to 236,069.88, 325,772.20 and 128,640.80

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Solution

The fourth proportional to 236,069.88, 325,772.20 and 128,640.80 is: 177,522.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,069.88 : 325,772.20 = 128,640.80 : x
  2. Step 2: Convert to fraction form
    236,069.88/325,772.20 = 128,640.80/x
  3. Step 3: Cross multiply
    236,069.88x = 325,772.20 × 128,640.80
  4. Step 4: Simplify right side
    236,069.88x = 41,907,596,425.76
  5. Step 5: Solve for x
    x = 41,907,596,425.76/236,069.88
  6. Step 6: Final answer
    x = 177,522.00

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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.