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Finding the Fourth Proportional to 236,953.76, 355,492.94 and 85,166.15

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Solution

The fourth proportional to 236,953.76, 355,492.94 and 85,166.15 is: 127,771.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,953.76 : 355,492.94 = 85,166.15 : x
  2. Step 2: Convert to fraction form
    236,953.76/355,492.94 = 85,166.15/x
  3. Step 3: Cross multiply
    236,953.76x = 355,492.94 × 85,166.15
  4. Step 4: Simplify right side
    236,953.76x = 30,275,962,848.69
  5. Step 5: Solve for x
    x = 30,275,962,848.69/236,953.76
  6. Step 6: Final answer
    x = 127,771.61

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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.