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Finding the Fourth Proportional to 128,098.33, 191,890.46 and 117,634.89

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Solution

The fourth proportional to 128,098.33, 191,890.46 and 117,634.89 is: 176,216.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,098.33 : 191,890.46 = 117,634.89 : x
  2. Step 2: Convert to fraction form
    128,098.33/191,890.46 = 117,634.89/x
  3. Step 3: Cross multiply
    128,098.33x = 191,890.46 × 117,634.89
  4. Step 4: Simplify right side
    128,098.33x = 22,573,011,606.52
  5. Step 5: Solve for x
    x = 22,573,011,606.52/128,098.33
  6. Step 6: Final answer
    x = 176,216.28

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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.