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Finding the Fourth Proportional to 355,326.40, 532,989.60 and 236,612.80

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Solution

The fourth proportional to 355,326.40, 532,989.60 and 236,612.80 is: 354,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,326.40 : 532,989.60 = 236,612.80 : x
  2. Step 2: Convert to fraction form
    355,326.40/532,989.60 = 236,612.80/x
  3. Step 3: Cross multiply
    355,326.40x = 532,989.60 × 236,612.80
  4. Step 4: Simplify right side
    355,326.40x = 126,112,161,626.88
  5. Step 5: Solve for x
    x = 126,112,161,626.88/355,326.40
  6. Step 6: Final answer
    x = 354,919.20

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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.