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Finding the Fourth Proportional to 118,812.64, 178,204.06 and 38,843.90

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Solution

The fourth proportional to 118,812.64, 178,204.06 and 38,843.90 is: 58,260.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,812.64 : 178,204.06 = 38,843.90 : x
  2. Step 2: Convert to fraction form
    118,812.64/178,204.06 = 38,843.90/x
  3. Step 3: Cross multiply
    118,812.64x = 178,204.06 × 38,843.90
  4. Step 4: Simplify right side
    118,812.64x = 6,922,140,686.23
  5. Step 5: Solve for x
    x = 6,922,140,686.23/118,812.64
  6. Step 6: Final answer
    x = 58,260.98

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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.