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Finding the Fourth Proportional to 128,578.34, 192,867.53 and 62,006.06

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Solution

The fourth proportional to 128,578.34, 192,867.53 and 62,006.06 is: 93,009.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,578.34 : 192,867.53 = 62,006.06 : x
  2. Step 2: Convert to fraction form
    128,578.34/192,867.53 = 62,006.06/x
  3. Step 3: Cross multiply
    128,578.34x = 192,867.53 × 62,006.06
  4. Step 4: Simplify right side
    128,578.34x = 11,958,954,362.86
  5. Step 5: Solve for x
    x = 11,958,954,362.86/128,578.34
  6. Step 6: Final answer
    x = 93,009.09

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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.