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Finding the Fourth Proportional to 236,173.54, 354,223.80 and 86,378.80

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Solution

The fourth proportional to 236,173.54, 354,223.80 and 86,378.80 is: 129,554.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,173.54 : 354,223.80 = 86,378.80 : x
  2. Step 2: Convert to fraction form
    236,173.54/354,223.80 = 86,378.80/x
  3. Step 3: Cross multiply
    236,173.54x = 354,223.80 × 86,378.80
  4. Step 4: Simplify right side
    236,173.54x = 30,597,426,775.44
  5. Step 5: Solve for x
    x = 30,597,426,775.44/236,173.54
  6. Step 6: Final answer
    x = 129,554.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.