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Finding the Fourth Proportional to 128,665.86, 193,037.87 and 62,093.58

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Solution

The fourth proportional to 128,665.86, 193,037.87 and 62,093.58 is: 93,159.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,665.86 : 193,037.87 = 62,093.58 : x
  2. Step 2: Convert to fraction form
    128,665.86/193,037.87 = 62,093.58/x
  3. Step 3: Cross multiply
    128,665.86x = 193,037.87 × 62,093.58
  4. Step 4: Simplify right side
    128,665.86x = 11,986,412,423.87
  5. Step 5: Solve for x
    x = 11,986,412,423.87/128,665.86
  6. Step 6: Final answer
    x = 93,159.23

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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.