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Finding the Fourth Proportional to 236,600.94, 354,957.90 and 78,830.76

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Solution

The fourth proportional to 236,600.94, 354,957.90 and 78,830.76 is: 118,264.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,600.94 : 354,957.90 = 78,830.76 : x
  2. Step 2: Convert to fraction form
    236,600.94/354,957.90 = 78,830.76/x
  3. Step 3: Cross multiply
    236,600.94x = 354,957.90 × 78,830.76
  4. Step 4: Simplify right side
    236,600.94x = 27,981,601,025.00
  5. Step 5: Solve for x
    x = 27,981,601,025.00/236,600.94
  6. Step 6: Final answer
    x = 118,264.96

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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.