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Finding the Fourth Proportional to 202,940.60, 304,410.80 and 69,821.96

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Solution

The fourth proportional to 202,940.60, 304,410.80 and 69,821.96 is: 104,732.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,940.60 : 304,410.80 = 69,821.96 : x
  2. Step 2: Convert to fraction form
    202,940.60/304,410.80 = 69,821.96/x
  3. Step 3: Cross multiply
    202,940.60x = 304,410.80 × 69,821.96
  4. Step 4: Simplify right side
    202,940.60x = 21,254,558,701.17
  5. Step 5: Solve for x
    x = 21,254,558,701.17/202,940.60
  6. Step 6: Final answer
    x = 104,732.91

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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.