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Finding the Fourth Proportional to 128,801.98, 193,181.09 and 34,033.20

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Solution

The fourth proportional to 128,801.98, 193,181.09 and 34,033.20 is: 51,044.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,801.98 : 193,181.09 = 34,033.20 : x
  2. Step 2: Convert to fraction form
    128,801.98/193,181.09 = 34,033.20/x
  3. Step 3: Cross multiply
    128,801.98x = 193,181.09 × 34,033.20
  4. Step 4: Simplify right side
    128,801.98x = 6,574,570,672.19
  5. Step 5: Solve for x
    x = 6,574,570,672.19/128,801.98
  6. Step 6: Final answer
    x = 51,044.02

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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.