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Finding the Fourth Proportional to 118,794.60, 178,008.84 and 79,208.28

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Solution

The fourth proportional to 118,794.60, 178,008.84 and 79,208.28 is: 118,690.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,794.60 : 178,008.84 = 79,208.28 : x
  2. Step 2: Convert to fraction form
    118,794.60/178,008.84 = 79,208.28/x
  3. Step 3: Cross multiply
    118,794.60x = 178,008.84 × 79,208.28
  4. Step 4: Simplify right side
    118,794.60x = 14,099,774,041.20
  5. Step 5: Solve for x
    x = 14,099,774,041.20/118,794.60
  6. Step 6: Final answer
    x = 118,690.36

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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.