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Finding the Fourth Proportional to 96,907.70, 133,785.57 and 58,673.78

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Solution

The fourth proportional to 96,907.70, 133,785.57 and 58,673.78 is: 81,001.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,907.70 : 133,785.57 = 58,673.78 : x
  2. Step 2: Convert to fraction form
    96,907.70/133,785.57 = 58,673.78/x
  3. Step 3: Cross multiply
    96,907.70x = 133,785.57 × 58,673.78
  4. Step 4: Simplify right side
    96,907.70x = 7,849,705,101.35
  5. Step 5: Solve for x
    x = 7,849,705,101.35/96,907.70
  6. Step 6: Final answer
    x = 81,001.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.