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Finding the Fourth Proportional to 236,608.94, 354,969.90 and 78,838.76

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Solution

The fourth proportional to 236,608.94, 354,969.90 and 78,838.76 is: 118,276.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,608.94 : 354,969.90 = 78,838.76 : x
  2. Step 2: Convert to fraction form
    236,608.94/354,969.90 = 78,838.76/x
  3. Step 3: Cross multiply
    236,608.94x = 354,969.90 × 78,838.76
  4. Step 4: Simplify right side
    236,608.94x = 27,985,386,753.32
  5. Step 5: Solve for x
    x = 27,985,386,753.32/236,608.94
  6. Step 6: Final answer
    x = 118,276.96

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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.