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Finding the Fourth Proportional to 128,798.67, 193,176.14 and 34,029.89

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Solution

The fourth proportional to 128,798.67, 193,176.14 and 34,029.89 is: 51,039.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,798.67 : 193,176.14 = 34,029.89 : x
  2. Step 2: Convert to fraction form
    128,798.67/193,176.14 = 34,029.89/x
  3. Step 3: Cross multiply
    128,798.67x = 193,176.14 × 34,029.89
  4. Step 4: Simplify right side
    128,798.67x = 6,573,761,658.79
  5. Step 5: Solve for x
    x = 6,573,761,658.79/128,798.67
  6. Step 6: Final answer
    x = 51,039.05

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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.