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Finding the Fourth Proportional to 164,911.60, 246,589.80 and 122,921.20

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Solution

The fourth proportional to 164,911.60, 246,589.80 and 122,921.20 is: 183,802.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,911.60 : 246,589.80 = 122,921.20 : x
  2. Step 2: Convert to fraction form
    164,911.60/246,589.80 = 122,921.20/x
  3. Step 3: Cross multiply
    164,911.60x = 246,589.80 × 122,921.20
  4. Step 4: Simplify right side
    164,911.60x = 30,311,114,123.76
  5. Step 5: Solve for x
    x = 30,311,114,123.76/164,911.60
  6. Step 6: Final answer
    x = 183,802.20

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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.